31378655

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{547}}^1$

素因数の和:719

約数の個数: 32

約数和(自身を含む): 47347200

約数和(自身を除く): 15968545

約数列:

[1, 5, 7, 11, 35, 55, 77, 149, 385, 547, 745, 1043, 1639, 2735, 3829, 5215, 6017, 8195, 11473, 19145, 30085, 42119, 57365, 81503, 210595, 407515, 570521, 896533, 2852605, 4482665, 6275731, 31378655]

約数ペア:

[(1, 31378655), (5, 6275731), (7, 4482665), (11, 2852605), (35, 896533), (55, 570521), (77, 407515), (149, 210595), (385, 81503), (547, 57365), (745, 42119), (1043, 30085), (1639, 19145), (2735, 11473), (3829, 8195), (5215, 6017)]