28702980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{881}}^1$

素因数の和:1077

約数の個数: 72

約数和(自身を含む): 87646104

約数和(自身を除く): 58943124

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 181, 362, 543, 724, 881, 905, 1086, 1629, 1762, 1810, 2172, 2643, 2715, 3258, 3524, 3620, 4405, 5286, 5430, 6516, 7929, 8145, 8810, 10572, 10860, 13215, 15858, 16290, 17620, 26430, 31716, 32580, 39645, 52860, 79290, 158580, 159461, 318922, 478383, 637844, 797305, 956766, 1435149, 1594610, 1913532, 2391915, 2870298, 3189220, 4783830, 5740596, 7175745, 9567660, 14351490, 28702980]

約数ペア:

[(1, 28702980), (2, 14351490), (3, 9567660), (4, 7175745), (5, 5740596), (6, 4783830), (9, 3189220), (10, 2870298), (12, 2391915), (15, 1913532), (18, 1594610), (20, 1435149), (30, 956766), (36, 797305), (45, 637844), (60, 478383), (90, 318922), (180, 159461), (181, 158580), (362, 79290), (543, 52860), (724, 39645), (881, 32580), (905, 31716), (1086, 26430), (1629, 17620), (1762, 16290), (1810, 15858), (2172, 13215), (2643, 10860), (2715, 10572), (3258, 8810), (3524, 8145), (3620, 7929), (4405, 6516), (5286, 5430)]