401408980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{2749}}^1$

素因数の和:2921

約数の個数: 72

約数和(自身を含む): 987525000

約数和(自身を除く): 586116020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 149, 196, 245, 298, 490, 596, 745, 980, 1043, 1490, 2086, 2749, 2980, 4172, 5215, 5498, 7301, 10430, 10996, 13745, 14602, 19243, 20860, 27490, 29204, 36505, 38486, 54980, 73010, 76972, 96215, 134701, 146020, 192430, 269402, 384860, 409601, 538804, 673505, 819202, 1347010, 1638404, 2048005, 2694020, 2867207, 4096010, 5734414, 8192020, 11468828, 14336035, 20070449, 28672070, 40140898, 57344140, 80281796, 100352245, 200704490, 401408980]

約数ペア:

[(1, 401408980), (2, 200704490), (4, 100352245), (5, 80281796), (7, 57344140), (10, 40140898), (14, 28672070), (20, 20070449), (28, 14336035), (35, 11468828), (49, 8192020), (70, 5734414), (98, 4096010), (140, 2867207), (149, 2694020), (196, 2048005), (245, 1638404), (298, 1347010), (490, 819202), (596, 673505), (745, 538804), (980, 409601), (1043, 384860), (1490, 269402), (2086, 192430), (2749, 146020), (2980, 134701), (4172, 96215), (5215, 76972), (5498, 73010), (7301, 54980), (10430, 38486), (10996, 36505), (13745, 29204), (14602, 27490), (19243, 20860)]