20105220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{857}}^1$

素因数の和:909

約数の個数: 96

約数和(自身を含む): 62270208

約数和(自身を除く): 42164988

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 23, 30, 34, 46, 51, 60, 68, 69, 85, 92, 102, 115, 138, 170, 204, 230, 255, 276, 340, 345, 391, 460, 510, 690, 782, 857, 1020, 1173, 1380, 1564, 1714, 1955, 2346, 2571, 3428, 3910, 4285, 4692, 5142, 5865, 7820, 8570, 10284, 11730, 12855, 14569, 17140, 19711, 23460, 25710, 29138, 39422, 43707, 51420, 58276, 59133, 72845, 78844, 87414, 98555, 118266, 145690, 174828, 197110, 218535, 236532, 291380, 295665, 335087, 394220, 437070, 591330, 670174, 874140, 1005261, 1182660, 1340348, 1675435, 2010522, 3350870, 4021044, 5026305, 6701740, 10052610, 20105220]

約数ペア:

[(1, 20105220), (2, 10052610), (3, 6701740), (4, 5026305), (5, 4021044), (6, 3350870), (10, 2010522), (12, 1675435), (15, 1340348), (17, 1182660), (20, 1005261), (23, 874140), (30, 670174), (34, 591330), (46, 437070), (51, 394220), (60, 335087), (68, 295665), (69, 291380), (85, 236532), (92, 218535), (102, 197110), (115, 174828), (138, 145690), (170, 118266), (204, 98555), (230, 87414), (255, 78844), (276, 72845), (340, 59133), (345, 58276), (391, 51420), (460, 43707), (510, 39422), (690, 29138), (782, 25710), (857, 23460), (1020, 19711), (1173, 17140), (1380, 14569), (1564, 12855), (1714, 11730), (1955, 10284), (2346, 8570), (2571, 7820), (3428, 5865), (3910, 5142), (4285, 4692)]