20055280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{607}}^1$

素因数の和:686

約数の個数: 80

約数和(自身を含む): 54282240

約数和(自身を除く): 34226960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 59, 70, 80, 112, 118, 140, 236, 280, 295, 413, 472, 560, 590, 607, 826, 944, 1180, 1214, 1652, 2065, 2360, 2428, 3035, 3304, 4130, 4249, 4720, 4856, 6070, 6608, 8260, 8498, 9712, 12140, 16520, 16996, 21245, 24280, 33040, 33992, 35813, 42490, 48560, 67984, 71626, 84980, 143252, 169960, 179065, 250691, 286504, 339920, 358130, 501382, 573008, 716260, 1002764, 1253455, 1432520, 2005528, 2506910, 2865040, 4011056, 5013820, 10027640, 20055280]

約数ペア:

[(1, 20055280), (2, 10027640), (4, 5013820), (5, 4011056), (7, 2865040), (8, 2506910), (10, 2005528), (14, 1432520), (16, 1253455), (20, 1002764), (28, 716260), (35, 573008), (40, 501382), (56, 358130), (59, 339920), (70, 286504), (80, 250691), (112, 179065), (118, 169960), (140, 143252), (236, 84980), (280, 71626), (295, 67984), (413, 48560), (472, 42490), (560, 35813), (590, 33992), (607, 33040), (826, 24280), (944, 21245), (1180, 16996), (1214, 16520), (1652, 12140), (2065, 9712), (2360, 8498), (2428, 8260), (3035, 6608), (3304, 6070), (4130, 4856), (4249, 4720)]