28231020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{47}}^2\times {\mathrm{71}}^1$

素因数の和:180

約数の個数: 108

約数和(自身を含む): 88727184

約数和(自身を除く): 60496164

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 47, 60, 71, 90, 94, 141, 142, 180, 188, 213, 235, 282, 284, 355, 423, 426, 470, 564, 639, 705, 710, 846, 852, 940, 1065, 1278, 1410, 1420, 1692, 2115, 2130, 2209, 2556, 2820, 3195, 3337, 4230, 4260, 4418, 6390, 6627, 6674, 8460, 8836, 10011, 11045, 12780, 13254, 13348, 16685, 19881, 20022, 22090, 26508, 30033, 33135, 33370, 39762, 40044, 44180, 50055, 60066, 66270, 66740, 79524, 99405, 100110, 120132, 132540, 150165, 156839, 198810, 200220, 300330, 313678, 397620, 470517, 600660, 627356, 784195, 941034, 1411551, 1568390, 1882068, 2352585, 2823102, 3136780, 4705170, 5646204, 7057755, 9410340, 14115510, 28231020]

約数ペア:

[(1, 28231020), (2, 14115510), (3, 9410340), (4, 7057755), (5, 5646204), (6, 4705170), (9, 3136780), (10, 2823102), (12, 2352585), (15, 1882068), (18, 1568390), (20, 1411551), (30, 941034), (36, 784195), (45, 627356), (47, 600660), (60, 470517), (71, 397620), (90, 313678), (94, 300330), (141, 200220), (142, 198810), (180, 156839), (188, 150165), (213, 132540), (235, 120132), (282, 100110), (284, 99405), (355, 79524), (423, 66740), (426, 66270), (470, 60066), (564, 50055), (639, 44180), (705, 40044), (710, 39762), (846, 33370), (852, 33135), (940, 30033), (1065, 26508), (1278, 22090), (1410, 20022), (1420, 19881), (1692, 16685), (2115, 13348), (2130, 13254), (2209, 12780), (2556, 11045), (2820, 10011), (3195, 8836), (3337, 8460), (4230, 6674), (4260, 6627), (4418, 6390)]