389980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:94

約数の個数: 48

約数和(自身を含む): 919296

約数和(自身を除く): 529316

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 37, 62, 68, 74, 85, 124, 148, 155, 170, 185, 310, 340, 370, 527, 620, 629, 740, 1054, 1147, 1258, 2108, 2294, 2516, 2635, 3145, 4588, 5270, 5735, 6290, 10540, 11470, 12580, 19499, 22940, 38998, 77996, 97495, 194990, 389980]

約数ペア:

[(1, 389980), (2, 194990), (4, 97495), (5, 77996), (10, 38998), (17, 22940), (20, 19499), (31, 12580), (34, 11470), (37, 10540), (62, 6290), (68, 5735), (74, 5270), (85, 4588), (124, 3145), (148, 2635), (155, 2516), (170, 2294), (185, 2108), (310, 1258), (340, 1147), (370, 1054), (527, 740), (620, 629)]