81839680

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{191}}^1$

素因数の和:324

約数の個数: 112

約数和(自身を含む): 213018624

約数和(自身を除く): 131178944

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 103, 104, 130, 160, 191, 206, 208, 260, 320, 382, 412, 416, 515, 520, 764, 824, 832, 955, 1030, 1040, 1339, 1528, 1648, 1910, 2060, 2080, 2483, 2678, 3056, 3296, 3820, 4120, 4160, 4966, 5356, 6112, 6592, 6695, 7640, 8240, 9932, 10712, 12224, 12415, 13390, 15280, 16480, 19673, 19864, 21424, 24830, 26780, 30560, 32960, 39346, 39728, 42848, 49660, 53560, 61120, 78692, 79456, 85696, 98365, 99320, 107120, 157384, 158912, 196730, 198640, 214240, 255749, 314768, 393460, 397280, 428480, 511498, 629536, 786920, 794560, 1022996, 1259072, 1278745, 1573840, 2045992, 2557490, 3147680, 4091984, 5114980, 6295360, 8183968, 10229960, 16367936, 20459920, 40919840, 81839680]

約数ペア:

[(1, 81839680), (2, 40919840), (4, 20459920), (5, 16367936), (8, 10229960), (10, 8183968), (13, 6295360), (16, 5114980), (20, 4091984), (26, 3147680), (32, 2557490), (40, 2045992), (52, 1573840), (64, 1278745), (65, 1259072), (80, 1022996), (103, 794560), (104, 786920), (130, 629536), (160, 511498), (191, 428480), (206, 397280), (208, 393460), (260, 314768), (320, 255749), (382, 214240), (412, 198640), (416, 196730), (515, 158912), (520, 157384), (764, 107120), (824, 99320), (832, 98365), (955, 85696), (1030, 79456), (1040, 78692), (1339, 61120), (1528, 53560), (1648, 49660), (1910, 42848), (2060, 39728), (2080, 39346), (2483, 32960), (2678, 30560), (3056, 26780), (3296, 24830), (3820, 21424), (4120, 19864), (4160, 19673), (4966, 16480), (5356, 15280), (6112, 13390), (6592, 12415), (6695, 12224), (7640, 10712), (8240, 9932)]