18510700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{491}}^1$

素因数の和:547

約数の個数: 72

約数和(自身を含む): 44840880

約数和(自身を除く): 26330180

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 29, 50, 52, 58, 65, 100, 116, 130, 145, 260, 290, 325, 377, 491, 580, 650, 725, 754, 982, 1300, 1450, 1508, 1885, 1964, 2455, 2900, 3770, 4910, 6383, 7540, 9425, 9820, 12275, 12766, 14239, 18850, 24550, 25532, 28478, 31915, 37700, 49100, 56956, 63830, 71195, 127660, 142390, 159575, 185107, 284780, 319150, 355975, 370214, 638300, 711950, 740428, 925535, 1423900, 1851070, 3702140, 4627675, 9255350, 18510700]

約数ペア:

[(1, 18510700), (2, 9255350), (4, 4627675), (5, 3702140), (10, 1851070), (13, 1423900), (20, 925535), (25, 740428), (26, 711950), (29, 638300), (50, 370214), (52, 355975), (58, 319150), (65, 284780), (100, 185107), (116, 159575), (130, 142390), (145, 127660), (260, 71195), (290, 63830), (325, 56956), (377, 49100), (491, 37700), (580, 31915), (650, 28478), (725, 25532), (754, 24550), (982, 18850), (1300, 14239), (1450, 12766), (1508, 12275), (1885, 9820), (1964, 9425), (2455, 7540), (2900, 6383), (3770, 4910)]