775533820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{8999}}^1$

素因数の和:9178

約数の個数: 48

約数和(自身を含む): 1693440000

約数和(自身を除く): 917906180

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 139, 155, 278, 310, 556, 620, 695, 1390, 2780, 4309, 8618, 8999, 17236, 17998, 21545, 35996, 43090, 44995, 86180, 89990, 179980, 278969, 557938, 1115876, 1250861, 1394845, 2501722, 2789690, 5003444, 5579380, 6254305, 12508610, 25017220, 38776691, 77553382, 155106764, 193883455, 387766910, 775533820]

約数ペア:

[(1, 775533820), (2, 387766910), (4, 193883455), (5, 155106764), (10, 77553382), (20, 38776691), (31, 25017220), (62, 12508610), (124, 6254305), (139, 5579380), (155, 5003444), (278, 2789690), (310, 2501722), (556, 1394845), (620, 1250861), (695, 1115876), (1390, 557938), (2780, 278969), (4309, 179980), (8618, 89990), (8999, 86180), (17236, 44995), (17998, 43090), (21545, 35996)]