18919620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1181}}^1$

素因数の和:1285

約数の個数: 72

約数和(自身を含む): 58083480

約数和(自身を除く): 39163860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 89, 90, 178, 180, 267, 356, 445, 534, 801, 890, 1068, 1181, 1335, 1602, 1780, 2362, 2670, 3204, 3543, 4005, 4724, 5340, 5905, 7086, 8010, 10629, 11810, 14172, 16020, 17715, 21258, 23620, 35430, 42516, 53145, 70860, 105109, 106290, 210218, 212580, 315327, 420436, 525545, 630654, 945981, 1051090, 1261308, 1576635, 1891962, 2102180, 3153270, 3783924, 4729905, 6306540, 9459810, 18919620]

約数ペア:

[(1, 18919620), (2, 9459810), (3, 6306540), (4, 4729905), (5, 3783924), (6, 3153270), (9, 2102180), (10, 1891962), (12, 1576635), (15, 1261308), (18, 1051090), (20, 945981), (30, 630654), (36, 525545), (45, 420436), (60, 315327), (89, 212580), (90, 210218), (178, 106290), (180, 105109), (267, 70860), (356, 53145), (445, 42516), (534, 35430), (801, 23620), (890, 21258), (1068, 17715), (1181, 16020), (1335, 14172), (1602, 11810), (1780, 10629), (2362, 8010), (2670, 7086), (3204, 5905), (3543, 5340), (4005, 4724)]