18081990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{6481}}^1$

素因数の和:6525

約数の個数: 48

約数和(自身を含む): 48537216

約数和(自身を除く): 30455226

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 31, 45, 62, 90, 93, 155, 186, 279, 310, 465, 558, 930, 1395, 2790, 6481, 12962, 19443, 32405, 38886, 58329, 64810, 97215, 116658, 194430, 200911, 291645, 401822, 583290, 602733, 1004555, 1205466, 1808199, 2009110, 3013665, 3616398, 6027330, 9040995, 18081990]

約数ペア:

[(1, 18081990), (2, 9040995), (3, 6027330), (5, 3616398), (6, 3013665), (9, 2009110), (10, 1808199), (15, 1205466), (18, 1004555), (30, 602733), (31, 583290), (45, 401822), (62, 291645), (90, 200911), (93, 194430), (155, 116658), (186, 97215), (279, 64810), (310, 58329), (465, 38886), (558, 32405), (930, 19443), (1395, 12962), (2790, 6481)]