621400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{239}}^1$

素因数の和:268

約数の個数: 48

約数和(自身を含む): 1562400

約数和(自身を除く): 941000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 239, 260, 325, 478, 520, 650, 956, 1195, 1300, 1912, 2390, 2600, 3107, 4780, 5975, 6214, 9560, 11950, 12428, 15535, 23900, 24856, 31070, 47800, 62140, 77675, 124280, 155350, 310700, 621400]

約数ペア:

[(1, 621400), (2, 310700), (4, 155350), (5, 124280), (8, 77675), (10, 62140), (13, 47800), (20, 31070), (25, 24856), (26, 23900), (40, 15535), (50, 12428), (52, 11950), (65, 9560), (100, 6214), (104, 5975), (130, 4780), (200, 3107), (239, 2600), (260, 2390), (325, 1912), (478, 1300), (520, 1195), (650, 956)]