19987498

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1\times {\mathrm{1801}}^1$

素因数の和:2013

約数の個数: 16

約数和(自身を含む): 31138560

約数和(自身を除く): 11151062

約数列:

[1, 2, 31, 62, 179, 358, 1801, 3602, 5549, 11098, 55831, 111662, 322379, 644758, 9993749, 19987498]

約数ペア:

[(1, 19987498), (2, 9993749), (31, 644758), (62, 322379), (179, 111662), (358, 55831), (1801, 11098), (3602, 5549)]