19688580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1229}}^1$

素因数の和:1333

約数の個数: 72

約数和(自身を含む): 60442200

約数和(自身を除く): 40753620

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, 1229, 1335, 1602, 1780, 2458, 2670, 3204, 3687, 4005, 4916, 5340, 6145, 7374, 8010, 11061, 12290, 14748, 16020, 18435, 22122, 24580, 36870, 44244, 55305, 73740, 109381, 110610, 218762, 221220, 328143, 437524, 546905, 656286, 984429, 1093810, 1312572, 1640715, 1968858, 2187620, 3281430, 3937716, 4922145, 6562860, 9844290, 19688580]

約数ペア:

[(1, 19688580), (2, 9844290), (3, 6562860), (4, 4922145), (5, 3937716), (6, 3281430), (9, 2187620), (10, 1968858), (12, 1640715), (15, 1312572), (18, 1093810), (20, 984429), (30, 656286), (36, 546905), (45, 437524), (60, 328143), (89, 221220), (90, 218762), (178, 110610), (180, 109381), (267, 73740), (356, 55305), (445, 44244), (534, 36870), (801, 24580), (890, 22122), (1068, 18435), (1229, 16020), (1335, 14748), (1602, 12290), (1780, 11061), (2458, 8010), (2670, 7374), (3204, 6145), (3687, 5340), (4005, 4916)]