1377640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:154

約数の個数: 64

約数和(自身を含む): 3525120

約数和(自身を除く): 2147480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 101, 110, 124, 155, 202, 220, 248, 310, 341, 404, 440, 505, 620, 682, 808, 1010, 1111, 1240, 1364, 1705, 2020, 2222, 2728, 3131, 3410, 4040, 4444, 5555, 6262, 6820, 8888, 11110, 12524, 13640, 15655, 22220, 25048, 31310, 34441, 44440, 62620, 68882, 125240, 137764, 172205, 275528, 344410, 688820, 1377640]

約数ペア:

[(1, 1377640), (2, 688820), (4, 344410), (5, 275528), (8, 172205), (10, 137764), (11, 125240), (20, 68882), (22, 62620), (31, 44440), (40, 34441), (44, 31310), (55, 25048), (62, 22220), (88, 15655), (101, 13640), (110, 12524), (124, 11110), (155, 8888), (202, 6820), (220, 6262), (248, 5555), (310, 4444), (341, 4040), (404, 3410), (440, 3131), (505, 2728), (620, 2222), (682, 2020), (808, 1705), (1010, 1364), (1111, 1240)]