99813980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{179}}^1\times {\mathrm{569}}^1$

素因数の和:771

約数の個数: 72

約数和(自身を含む): 245624400

約数和(自身を除く): 145810420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 179, 196, 245, 358, 490, 569, 716, 895, 980, 1138, 1253, 1790, 2276, 2506, 2845, 3580, 3983, 5012, 5690, 6265, 7966, 8771, 11380, 12530, 15932, 17542, 19915, 25060, 27881, 35084, 39830, 43855, 55762, 79660, 87710, 101851, 111524, 139405, 175420, 203702, 278810, 407404, 509255, 557620, 712957, 1018510, 1425914, 2037020, 2851828, 3564785, 4990699, 7129570, 9981398, 14259140, 19962796, 24953495, 49906990, 99813980]

約数ペア:

[(1, 99813980), (2, 49906990), (4, 24953495), (5, 19962796), (7, 14259140), (10, 9981398), (14, 7129570), (20, 4990699), (28, 3564785), (35, 2851828), (49, 2037020), (70, 1425914), (98, 1018510), (140, 712957), (179, 557620), (196, 509255), (245, 407404), (358, 278810), (490, 203702), (569, 175420), (716, 139405), (895, 111524), (980, 101851), (1138, 87710), (1253, 79660), (1790, 55762), (2276, 43855), (2506, 39830), (2845, 35084), (3580, 27881), (3983, 25060), (5012, 19915), (5690, 17542), (6265, 15932), (7966, 12530), (8771, 11380)]