12481220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{491}}^1$

素因数の和:572

約数の個数: 48

約数和(自身を含む): 27772416

約数和(自身を除く): 15291196

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 410, 491, 620, 820, 982, 1271, 1964, 2455, 2542, 4910, 5084, 6355, 9820, 12710, 15221, 20131, 25420, 30442, 40262, 60884, 76105, 80524, 100655, 152210, 201310, 304420, 402620, 624061, 1248122, 2496244, 3120305, 6240610, 12481220]

約数ペア:

[(1, 12481220), (2, 6240610), (4, 3120305), (5, 2496244), (10, 1248122), (20, 624061), (31, 402620), (41, 304420), (62, 201310), (82, 152210), (124, 100655), (155, 80524), (164, 76105), (205, 60884), (310, 40262), (410, 30442), (491, 25420), (620, 20131), (820, 15221), (982, 12710), (1271, 9820), (1964, 6355), (2455, 5084), (2542, 4910)]