21912800

素因数分解:

$2^5\times 5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1$

素因数の和:90

約数の個数: 216

約数和(自身を含む): 68573736

約数和(自身を除く): 46660936

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 25, 26, 28, 32, 35, 40, 43, 49, 50, 52, 56, 65, 70, 80, 86, 91, 98, 100, 104, 112, 130, 140, 160, 172, 175, 182, 196, 200, 208, 215, 224, 245, 260, 280, 301, 325, 344, 350, 364, 392, 400, 416, 430, 455, 490, 520, 559, 560, 602, 637, 650, 688, 700, 728, 784, 800, 860, 910, 980, 1040, 1075, 1118, 1120, 1204, 1225, 1274, 1300, 1376, 1400, 1456, 1505, 1568, 1720, 1820, 1960, 2080, 2107, 2150, 2236, 2275, 2408, 2450, 2548, 2600, 2795, 2800, 2912, 3010, 3185, 3440, 3640, 3913, 3920, 4214, 4300, 4472, 4550, 4816, 4900, 5096, 5200, 5590, 5600, 6020, 6370, 6880, 7280, 7525, 7826, 7840, 8428, 8600, 8944, 9100, 9632, 9800, 10192, 10400, 10535, 11180, 12040, 12740, 13975, 14560, 15050, 15652, 15925, 16856, 17200, 17888, 18200, 19565, 19600, 20384, 21070, 22360, 24080, 25480, 27391, 27950, 30100, 31304, 31850, 33712, 34400, 36400, 39130, 39200, 42140, 44720, 48160, 50960, 52675, 54782, 55900, 60200, 62608, 63700, 67424, 72800, 78260, 84280, 89440, 97825, 101920, 105350, 109564, 111800, 120400, 125216, 127400, 136955, 156520, 168560, 195650, 210700, 219128, 223600, 240800, 254800, 273910, 313040, 337120, 391300, 421400, 438256, 447200, 509600, 547820, 626080, 684775, 782600, 842800, 876512, 1095640, 1369550, 1565200, 1685600, 2191280, 2739100, 3130400, 4382560, 5478200, 10956400, 21912800]

約数ペア:

[(1, 21912800), (2, 10956400), (4, 5478200), (5, 4382560), (7, 3130400), (8, 2739100), (10, 2191280), (13, 1685600), (14, 1565200), (16, 1369550), (20, 1095640), (25, 876512), (26, 842800), (28, 782600), (32, 684775), (35, 626080), (40, 547820), (43, 509600), (49, 447200), (50, 438256), (52, 421400), (56, 391300), (65, 337120), (70, 313040), (80, 273910), (86, 254800), (91, 240800), (98, 223600), (100, 219128), (104, 210700), (112, 195650), (130, 168560), (140, 156520), (160, 136955), (172, 127400), (175, 125216), (182, 120400), (196, 111800), (200, 109564), (208, 105350), (215, 101920), (224, 97825), (245, 89440), (260, 84280), (280, 78260), (301, 72800), (325, 67424), (344, 63700), (350, 62608), (364, 60200), (392, 55900), (400, 54782), (416, 52675), (430, 50960), (455, 48160), (490, 44720), (520, 42140), (559, 39200), (560, 39130), (602, 36400), (637, 34400), (650, 33712), (688, 31850), (700, 31304), (728, 30100), (784, 27950), (800, 27391), (860, 25480), (910, 24080), (980, 22360), (1040, 21070), (1075, 20384), (1118, 19600), (1120, 19565), (1204, 18200), (1225, 17888), (1274, 17200), (1300, 16856), (1376, 15925), (1400, 15652), (1456, 15050), (1505, 14560), (1568, 13975), (1720, 12740), (1820, 12040), (1960, 11180), (2080, 10535), (2107, 10400), (2150, 10192), (2236, 9800), (2275, 9632), (2408, 9100), (2450, 8944), (2548, 8600), (2600, 8428), (2795, 7840), (2800, 7826), (2912, 7525), (3010, 7280), (3185, 6880), (3440, 6370), (3640, 6020), (3913, 5600), (3920, 5590), (4214, 5200), (4300, 5096), (4472, 4900), (4550, 4816)]