28731040

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{727}}^1$

素因数の和:774

約数の個数: 96

約数和(自身を含む): 77051520

約数和(自身を除く): 48320480

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 160, 190, 208, 247, 260, 304, 380, 416, 494, 520, 608, 727, 760, 988, 1040, 1235, 1454, 1520, 1976, 2080, 2470, 2908, 3040, 3635, 3952, 4940, 5816, 7270, 7904, 9451, 9880, 11632, 13813, 14540, 18902, 19760, 23264, 27626, 29080, 37804, 39520, 47255, 55252, 58160, 69065, 75608, 94510, 110504, 116320, 138130, 151216, 179569, 189020, 221008, 276260, 302432, 359138, 378040, 442016, 552520, 718276, 756080, 897845, 1105040, 1436552, 1512160, 1795690, 2210080, 2873104, 3591380, 5746208, 7182760, 14365520, 28731040]

約数ペア:

[(1, 28731040), (2, 14365520), (4, 7182760), (5, 5746208), (8, 3591380), (10, 2873104), (13, 2210080), (16, 1795690), (19, 1512160), (20, 1436552), (26, 1105040), (32, 897845), (38, 756080), (40, 718276), (52, 552520), (65, 442016), (76, 378040), (80, 359138), (95, 302432), (104, 276260), (130, 221008), (152, 189020), (160, 179569), (190, 151216), (208, 138130), (247, 116320), (260, 110504), (304, 94510), (380, 75608), (416, 69065), (494, 58160), (520, 55252), (608, 47255), (727, 39520), (760, 37804), (988, 29080), (1040, 27626), (1235, 23264), (1454, 19760), (1520, 18902), (1976, 14540), (2080, 13813), (2470, 11632), (2908, 9880), (3040, 9451), (3635, 7904), (3952, 7270), (4940, 5816)]