12891970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{457}}^1$

素因数の和:515

約数の個数: 64

約数和(自身を含む): 29546496

約数和(自身を除く): 16654526

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 31, 35, 62, 65, 70, 91, 130, 155, 182, 217, 310, 403, 434, 455, 457, 806, 910, 914, 1085, 2015, 2170, 2285, 2821, 3199, 4030, 4570, 5642, 5941, 6398, 11882, 14105, 14167, 15995, 28210, 28334, 29705, 31990, 41587, 59410, 70835, 83174, 99169, 141670, 184171, 198338, 207935, 368342, 415870, 495845, 920855, 991690, 1289197, 1841710, 2578394, 6445985, 12891970]

約数ペア:

[(1, 12891970), (2, 6445985), (5, 2578394), (7, 1841710), (10, 1289197), (13, 991690), (14, 920855), (26, 495845), (31, 415870), (35, 368342), (62, 207935), (65, 198338), (70, 184171), (91, 141670), (130, 99169), (155, 83174), (182, 70835), (217, 59410), (310, 41587), (403, 31990), (434, 29705), (455, 28334), (457, 28210), (806, 15995), (910, 14167), (914, 14105), (1085, 11882), (2015, 6398), (2170, 5941), (2285, 5642), (2821, 4570), (3199, 4030)]