81776940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{194707}}^1$

素因数の和:194726

約数の個数: 48

約数和(自身を含む): 261687552

約数和(自身を除く): 179910612

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 194707, 389414, 584121, 778828, 973535, 1168242, 1362949, 1947070, 2336484, 2725898, 2920605, 3894140, 4088847, 5451796, 5841210, 6814745, 8177694, 11682420, 13629490, 16355388, 20444235, 27258980, 40888470, 81776940]

約数ペア:

[(1, 81776940), (2, 40888470), (3, 27258980), (4, 20444235), (5, 16355388), (6, 13629490), (7, 11682420), (10, 8177694), (12, 6814745), (14, 5841210), (15, 5451796), (20, 4088847), (21, 3894140), (28, 2920605), (30, 2725898), (35, 2336484), (42, 1947070), (60, 1362949), (70, 1168242), (84, 973535), (105, 778828), (140, 584121), (210, 389414), (420, 194707)]