21554720

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{331}}^1$

素因数の和:394

約数の個数: 96

約数和(自身を含む): 57226176

約数和(自身を除く): 35671456

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 37, 40, 44, 55, 74, 80, 88, 110, 148, 160, 176, 185, 220, 296, 331, 352, 370, 407, 440, 592, 662, 740, 814, 880, 1184, 1324, 1480, 1628, 1655, 1760, 2035, 2648, 2960, 3256, 3310, 3641, 4070, 5296, 5920, 6512, 6620, 7282, 8140, 10592, 12247, 13024, 13240, 14564, 16280, 18205, 24494, 26480, 29128, 32560, 36410, 48988, 52960, 58256, 61235, 65120, 72820, 97976, 116512, 122470, 134717, 145640, 195952, 244940, 269434, 291280, 391904, 489880, 538868, 582560, 673585, 979760, 1077736, 1347170, 1959520, 2155472, 2694340, 4310944, 5388680, 10777360, 21554720]

約数ペア:

[(1, 21554720), (2, 10777360), (4, 5388680), (5, 4310944), (8, 2694340), (10, 2155472), (11, 1959520), (16, 1347170), (20, 1077736), (22, 979760), (32, 673585), (37, 582560), (40, 538868), (44, 489880), (55, 391904), (74, 291280), (80, 269434), (88, 244940), (110, 195952), (148, 145640), (160, 134717), (176, 122470), (185, 116512), (220, 97976), (296, 72820), (331, 65120), (352, 61235), (370, 58256), (407, 52960), (440, 48988), (592, 36410), (662, 32560), (740, 29128), (814, 26480), (880, 24494), (1184, 18205), (1324, 16280), (1480, 14564), (1628, 13240), (1655, 13024), (1760, 12247), (2035, 10592), (2648, 8140), (2960, 7282), (3256, 6620), (3310, 6512), (3641, 5920), (4070, 5296)]