9987890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:179

約数の個数: 64

約数和(自身を含む): 21150720

約数和(自身を除く): 11162830

約数列:

[1, 2, 5, 10, 11, 22, 29, 31, 55, 58, 62, 101, 110, 145, 155, 202, 290, 310, 319, 341, 505, 638, 682, 899, 1010, 1111, 1595, 1705, 1798, 2222, 2929, 3131, 3190, 3410, 4495, 5555, 5858, 6262, 8990, 9889, 11110, 14645, 15655, 19778, 29290, 31310, 32219, 34441, 49445, 64438, 68882, 90799, 98890, 161095, 172205, 181598, 322190, 344410, 453995, 907990, 998789, 1997578, 4993945, 9987890]

約数ペア:

[(1, 9987890), (2, 4993945), (5, 1997578), (10, 998789), (11, 907990), (22, 453995), (29, 344410), (31, 322190), (55, 181598), (58, 172205), (62, 161095), (101, 98890), (110, 90799), (145, 68882), (155, 64438), (202, 49445), (290, 34441), (310, 32219), (319, 31310), (341, 29290), (505, 19778), (638, 15655), (682, 14645), (899, 11110), (1010, 9889), (1111, 8990), (1595, 6262), (1705, 5858), (1798, 5555), (2222, 4495), (2929, 3410), (3131, 3190)]