18259740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1663}}^1$

素因数の和:1739

約数の個数: 72

約数和(自身を含む): 56329728

約数和(自身を除く): 38069988

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 90, 122, 180, 183, 244, 305, 366, 549, 610, 732, 915, 1098, 1220, 1663, 1830, 2196, 2745, 3326, 3660, 4989, 5490, 6652, 8315, 9978, 10980, 14967, 16630, 19956, 24945, 29934, 33260, 49890, 59868, 74835, 99780, 101443, 149670, 202886, 299340, 304329, 405772, 507215, 608658, 912987, 1014430, 1217316, 1521645, 1825974, 2028860, 3043290, 3651948, 4564935, 6086580, 9129870, 18259740]

約数ペア:

[(1, 18259740), (2, 9129870), (3, 6086580), (4, 4564935), (5, 3651948), (6, 3043290), (9, 2028860), (10, 1825974), (12, 1521645), (15, 1217316), (18, 1014430), (20, 912987), (30, 608658), (36, 507215), (45, 405772), (60, 304329), (61, 299340), (90, 202886), (122, 149670), (180, 101443), (183, 99780), (244, 74835), (305, 59868), (366, 49890), (549, 33260), (610, 29934), (732, 24945), (915, 19956), (1098, 16630), (1220, 14967), (1663, 10980), (1830, 9978), (2196, 8315), (2745, 6652), (3326, 5490), (3660, 4989)]