21148400

素因数分解:

$2^4\times 5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1$

素因数の和:128

約数の個数: 180

約数和(自身を含む): 64417752

約数和(自身を除く): 43269352

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 25, 26, 28, 35, 40, 49, 50, 52, 56, 65, 70, 80, 83, 91, 98, 100, 104, 112, 130, 140, 166, 175, 182, 196, 200, 208, 245, 260, 280, 325, 332, 350, 364, 392, 400, 415, 455, 490, 520, 560, 581, 637, 650, 664, 700, 728, 784, 830, 910, 980, 1040, 1079, 1162, 1225, 1274, 1300, 1328, 1400, 1456, 1660, 1820, 1960, 2075, 2158, 2275, 2324, 2450, 2548, 2600, 2800, 2905, 3185, 3320, 3640, 3920, 4067, 4150, 4316, 4550, 4648, 4900, 5096, 5200, 5395, 5810, 6370, 6640, 7280, 7553, 8134, 8300, 8632, 9100, 9296, 9800, 10192, 10790, 11620, 12740, 14525, 15106, 15925, 16268, 16600, 17264, 18200, 19600, 20335, 21580, 23240, 25480, 26975, 29050, 30212, 31850, 32536, 33200, 36400, 37765, 40670, 43160, 46480, 50960, 52871, 53950, 58100, 60424, 63700, 65072, 75530, 81340, 86320, 101675, 105742, 107900, 116200, 120848, 127400, 151060, 162680, 188825, 203350, 211484, 215800, 232400, 254800, 264355, 302120, 325360, 377650, 406700, 422968, 431600, 528710, 604240, 755300, 813400, 845936, 1057420, 1321775, 1510600, 1626800, 2114840, 2643550, 3021200, 4229680, 5287100, 10574200, 21148400]

約数ペア:

[(1, 21148400), (2, 10574200), (4, 5287100), (5, 4229680), (7, 3021200), (8, 2643550), (10, 2114840), (13, 1626800), (14, 1510600), (16, 1321775), (20, 1057420), (25, 845936), (26, 813400), (28, 755300), (35, 604240), (40, 528710), (49, 431600), (50, 422968), (52, 406700), (56, 377650), (65, 325360), (70, 302120), (80, 264355), (83, 254800), (91, 232400), (98, 215800), (100, 211484), (104, 203350), (112, 188825), (130, 162680), (140, 151060), (166, 127400), (175, 120848), (182, 116200), (196, 107900), (200, 105742), (208, 101675), (245, 86320), (260, 81340), (280, 75530), (325, 65072), (332, 63700), (350, 60424), (364, 58100), (392, 53950), (400, 52871), (415, 50960), (455, 46480), (490, 43160), (520, 40670), (560, 37765), (581, 36400), (637, 33200), (650, 32536), (664, 31850), (700, 30212), (728, 29050), (784, 26975), (830, 25480), (910, 23240), (980, 21580), (1040, 20335), (1079, 19600), (1162, 18200), (1225, 17264), (1274, 16600), (1300, 16268), (1328, 15925), (1400, 15106), (1456, 14525), (1660, 12740), (1820, 11620), (1960, 10790), (2075, 10192), (2158, 9800), (2275, 9296), (2324, 9100), (2450, 8632), (2548, 8300), (2600, 8134), (2800, 7553), (2905, 7280), (3185, 6640), (3320, 6370), (3640, 5810), (3920, 5395), (4067, 5200), (4150, 5096), (4316, 4900), (4550, 4648)]