18975420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{389}}^1$

素因数の和:675

約数の個数: 72

約数和(自身を含む): 57919680

約数和(自身を除く): 38944260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 271, 389, 542, 778, 813, 1084, 1167, 1355, 1556, 1626, 1945, 2334, 2439, 2710, 3252, 3501, 3890, 4065, 4668, 4878, 5420, 5835, 7002, 7780, 8130, 9756, 11670, 12195, 14004, 16260, 17505, 23340, 24390, 35010, 48780, 70020, 105419, 210838, 316257, 421676, 527095, 632514, 948771, 1054190, 1265028, 1581285, 1897542, 2108380, 3162570, 3795084, 4743855, 6325140, 9487710, 18975420]

約数ペア:

[(1, 18975420), (2, 9487710), (3, 6325140), (4, 4743855), (5, 3795084), (6, 3162570), (9, 2108380), (10, 1897542), (12, 1581285), (15, 1265028), (18, 1054190), (20, 948771), (30, 632514), (36, 527095), (45, 421676), (60, 316257), (90, 210838), (180, 105419), (271, 70020), (389, 48780), (542, 35010), (778, 24390), (813, 23340), (1084, 17505), (1167, 16260), (1355, 14004), (1556, 12195), (1626, 11670), (1945, 9756), (2334, 8130), (2439, 7780), (2710, 7002), (3252, 5835), (3501, 5420), (3890, 4878), (4065, 4668)]