251017040

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1\times {\mathrm{421}}^1$

素因数の和:720

約数の個数: 80

約数和(自身を含む): 607528080

約数和(自身を除く): 356511040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 257, 290, 421, 464, 514, 580, 842, 1028, 1160, 1285, 1684, 2056, 2105, 2320, 2570, 3368, 4112, 4210, 5140, 6736, 7453, 8420, 10280, 12209, 14906, 16840, 20560, 24418, 29812, 33680, 37265, 48836, 59624, 61045, 74530, 97672, 108197, 119248, 122090, 149060, 195344, 216394, 244180, 298120, 432788, 488360, 540985, 596240, 865576, 976720, 1081970, 1731152, 2163940, 3137713, 4327880, 6275426, 8655760, 12550852, 15688565, 25101704, 31377130, 50203408, 62754260, 125508520, 251017040]

約数ペア:

[(1, 251017040), (2, 125508520), (4, 62754260), (5, 50203408), (8, 31377130), (10, 25101704), (16, 15688565), (20, 12550852), (29, 8655760), (40, 6275426), (58, 4327880), (80, 3137713), (116, 2163940), (145, 1731152), (232, 1081970), (257, 976720), (290, 865576), (421, 596240), (464, 540985), (514, 488360), (580, 432788), (842, 298120), (1028, 244180), (1160, 216394), (1285, 195344), (1684, 149060), (2056, 122090), (2105, 119248), (2320, 108197), (2570, 97672), (3368, 74530), (4112, 61045), (4210, 59624), (5140, 48836), (6736, 37265), (7453, 33680), (8420, 29812), (10280, 24418), (12209, 20560), (14906, 16840)]