257889840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{82657}}^1$

素因数の和:82686

約数の個数: 80

約数和(自身を含む): 860965728

約数和(自身を除く): 603075888

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 82657, 165314, 247971, 330628, 413285, 495942, 661256, 826570, 991884, 1074541, 1239855, 1322512, 1653140, 1983768, 2149082, 2479710, 3223623, 3306280, 3967536, 4298164, 4959420, 5372705, 6447246, 6612560, 8596328, 9918840, 10745410, 12894492, 16118115, 17192656, 19837680, 21490820, 25788984, 32236230, 42981640, 51577968, 64472460, 85963280, 128944920, 257889840]

約数ペア:

[(1, 257889840), (2, 128944920), (3, 85963280), (4, 64472460), (5, 51577968), (6, 42981640), (8, 32236230), (10, 25788984), (12, 21490820), (13, 19837680), (15, 17192656), (16, 16118115), (20, 12894492), (24, 10745410), (26, 9918840), (30, 8596328), (39, 6612560), (40, 6447246), (48, 5372705), (52, 4959420), (60, 4298164), (65, 3967536), (78, 3306280), (80, 3223623), (104, 2479710), (120, 2149082), (130, 1983768), (156, 1653140), (195, 1322512), (208, 1239855), (240, 1074541), (260, 991884), (312, 826570), (390, 661256), (520, 495942), (624, 413285), (780, 330628), (1040, 247971), (1560, 165314), (3120, 82657)]