21428680

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^2$

素因数の和:96

約数の個数: 144

約数和(自身を含む): 62555220

約数和(自身を除く): 41126540

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 29, 35, 40, 49, 52, 56, 58, 65, 70, 91, 98, 104, 116, 130, 140, 145, 182, 196, 203, 232, 245, 260, 280, 290, 364, 377, 392, 406, 455, 490, 520, 580, 637, 728, 754, 812, 841, 910, 980, 1015, 1160, 1274, 1421, 1508, 1624, 1682, 1820, 1885, 1960, 2030, 2548, 2639, 2842, 3016, 3185, 3364, 3640, 3770, 4060, 4205, 5096, 5278, 5684, 5887, 6370, 6728, 7105, 7540, 8120, 8410, 10556, 10933, 11368, 11774, 12740, 13195, 14210, 15080, 16820, 18473, 21112, 21866, 23548, 25480, 26390, 28420, 29435, 33640, 36946, 41209, 43732, 47096, 52780, 54665, 56840, 58870, 73892, 76531, 82418, 87464, 92365, 105560, 109330, 117740, 147784, 153062, 164836, 184730, 206045, 218660, 235480, 306124, 329672, 369460, 382655, 412090, 437320, 535717, 612248, 738920, 765310, 824180, 1071434, 1530620, 1648360, 2142868, 2678585, 3061240, 4285736, 5357170, 10714340, 21428680]

約数ペア:

[(1, 21428680), (2, 10714340), (4, 5357170), (5, 4285736), (7, 3061240), (8, 2678585), (10, 2142868), (13, 1648360), (14, 1530620), (20, 1071434), (26, 824180), (28, 765310), (29, 738920), (35, 612248), (40, 535717), (49, 437320), (52, 412090), (56, 382655), (58, 369460), (65, 329672), (70, 306124), (91, 235480), (98, 218660), (104, 206045), (116, 184730), (130, 164836), (140, 153062), (145, 147784), (182, 117740), (196, 109330), (203, 105560), (232, 92365), (245, 87464), (260, 82418), (280, 76531), (290, 73892), (364, 58870), (377, 56840), (392, 54665), (406, 52780), (455, 47096), (490, 43732), (520, 41209), (580, 36946), (637, 33640), (728, 29435), (754, 28420), (812, 26390), (841, 25480), (910, 23548), (980, 21866), (1015, 21112), (1160, 18473), (1274, 16820), (1421, 15080), (1508, 14210), (1624, 13195), (1682, 12740), (1820, 11774), (1885, 11368), (1960, 10933), (2030, 10556), (2548, 8410), (2639, 8120), (2842, 7540), (3016, 7105), (3185, 6728), (3364, 6370), (3640, 5887), (3770, 5684), (4060, 5278), (4205, 5096)]