81955640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1$

素因数の和:241

約数の個数: 128

約数和(自身を含む): 214824960

約数和(自身を除く): 132869320

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 73, 85, 104, 127, 130, 136, 146, 170, 221, 254, 260, 292, 340, 365, 442, 508, 520, 584, 635, 680, 730, 884, 949, 1016, 1105, 1241, 1270, 1460, 1651, 1768, 1898, 2159, 2210, 2482, 2540, 2920, 3302, 3796, 4318, 4420, 4745, 4964, 5080, 6205, 6604, 7592, 8255, 8636, 8840, 9271, 9490, 9928, 10795, 12410, 13208, 16133, 16510, 17272, 18542, 18980, 21590, 24820, 28067, 32266, 33020, 37084, 37960, 43180, 46355, 49640, 56134, 64532, 66040, 74168, 80665, 86360, 92710, 112268, 120523, 129064, 140335, 157607, 161330, 185420, 224536, 241046, 280670, 315214, 322660, 370840, 482092, 561340, 602615, 630428, 645320, 788035, 964184, 1122680, 1205230, 1260856, 1576070, 2048891, 2410460, 3152140, 4097782, 4820920, 6304280, 8195564, 10244455, 16391128, 20488910, 40977820, 81955640]

約数ペア:

[(1, 81955640), (2, 40977820), (4, 20488910), (5, 16391128), (8, 10244455), (10, 8195564), (13, 6304280), (17, 4820920), (20, 4097782), (26, 3152140), (34, 2410460), (40, 2048891), (52, 1576070), (65, 1260856), (68, 1205230), (73, 1122680), (85, 964184), (104, 788035), (127, 645320), (130, 630428), (136, 602615), (146, 561340), (170, 482092), (221, 370840), (254, 322660), (260, 315214), (292, 280670), (340, 241046), (365, 224536), (442, 185420), (508, 161330), (520, 157607), (584, 140335), (635, 129064), (680, 120523), (730, 112268), (884, 92710), (949, 86360), (1016, 80665), (1105, 74168), (1241, 66040), (1270, 64532), (1460, 56134), (1651, 49640), (1768, 46355), (1898, 43180), (2159, 37960), (2210, 37084), (2482, 33020), (2540, 32266), (2920, 28067), (3302, 24820), (3796, 21590), (4318, 18980), (4420, 18542), (4745, 17272), (4964, 16510), (5080, 16133), (6205, 13208), (6604, 12410), (7592, 10795), (8255, 9928), (8636, 9490), (8840, 9271)]