19542640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:111

約数の個数: 160

約数和(自身を含む): 54996480

約数和(自身を除く): 35453840

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 23, 26, 38, 40, 43, 46, 52, 65, 76, 80, 86, 92, 95, 104, 115, 130, 152, 172, 184, 190, 208, 215, 230, 247, 260, 299, 304, 344, 368, 380, 430, 437, 460, 494, 520, 559, 598, 688, 760, 817, 860, 874, 920, 988, 989, 1040, 1118, 1196, 1235, 1495, 1520, 1634, 1720, 1748, 1840, 1976, 1978, 2185, 2236, 2392, 2470, 2795, 2990, 3268, 3440, 3496, 3952, 3956, 4085, 4370, 4472, 4784, 4940, 4945, 5590, 5681, 5980, 6536, 6992, 7912, 8170, 8740, 8944, 9880, 9890, 10621, 11180, 11362, 11960, 12857, 13072, 15824, 16340, 17480, 18791, 19760, 19780, 21242, 22360, 22724, 23920, 25714, 28405, 32680, 34960, 37582, 39560, 42484, 44720, 45448, 51428, 53105, 56810, 64285, 65360, 75164, 79120, 84968, 90896, 93955, 102856, 106210, 113620, 128570, 150328, 169936, 187910, 205712, 212420, 227240, 244283, 257140, 300656, 375820, 424840, 454480, 488566, 514280, 751640, 849680, 977132, 1028560, 1221415, 1503280, 1954264, 2442830, 3908528, 4885660, 9771320, 19542640]

約数ペア:

[(1, 19542640), (2, 9771320), (4, 4885660), (5, 3908528), (8, 2442830), (10, 1954264), (13, 1503280), (16, 1221415), (19, 1028560), (20, 977132), (23, 849680), (26, 751640), (38, 514280), (40, 488566), (43, 454480), (46, 424840), (52, 375820), (65, 300656), (76, 257140), (80, 244283), (86, 227240), (92, 212420), (95, 205712), (104, 187910), (115, 169936), (130, 150328), (152, 128570), (172, 113620), (184, 106210), (190, 102856), (208, 93955), (215, 90896), (230, 84968), (247, 79120), (260, 75164), (299, 65360), (304, 64285), (344, 56810), (368, 53105), (380, 51428), (430, 45448), (437, 44720), (460, 42484), (494, 39560), (520, 37582), (559, 34960), (598, 32680), (688, 28405), (760, 25714), (817, 23920), (860, 22724), (874, 22360), (920, 21242), (988, 19780), (989, 19760), (1040, 18791), (1118, 17480), (1196, 16340), (1235, 15824), (1495, 13072), (1520, 12857), (1634, 11960), (1720, 11362), (1748, 11180), (1840, 10621), (1976, 9890), (1978, 9880), (2185, 8944), (2236, 8740), (2392, 8170), (2470, 7912), (2795, 6992), (2990, 6536), (3268, 5980), (3440, 5681), (3496, 5590), (3952, 4945), (3956, 4940), (4085, 4784), (4370, 4472)]