40321840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{283}}^1$

素因数の和:446

約数の個数: 80

約数和(自身を含む): 102055968

約数和(自身を除く): 61734128

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 137, 208, 260, 274, 283, 520, 548, 566, 685, 1040, 1096, 1132, 1370, 1415, 1781, 2192, 2264, 2740, 2830, 3562, 3679, 4528, 5480, 5660, 7124, 7358, 8905, 10960, 11320, 14248, 14716, 17810, 18395, 22640, 28496, 29432, 35620, 36790, 38771, 58864, 71240, 73580, 77542, 142480, 147160, 155084, 193855, 294320, 310168, 387710, 504023, 620336, 775420, 1008046, 1550840, 2016092, 2520115, 3101680, 4032184, 5040230, 8064368, 10080460, 20160920, 40321840]

約数ペア:

[(1, 40321840), (2, 20160920), (4, 10080460), (5, 8064368), (8, 5040230), (10, 4032184), (13, 3101680), (16, 2520115), (20, 2016092), (26, 1550840), (40, 1008046), (52, 775420), (65, 620336), (80, 504023), (104, 387710), (130, 310168), (137, 294320), (208, 193855), (260, 155084), (274, 147160), (283, 142480), (520, 77542), (548, 73580), (566, 71240), (685, 58864), (1040, 38771), (1096, 36790), (1132, 35620), (1370, 29432), (1415, 28496), (1781, 22640), (2192, 18395), (2264, 17810), (2740, 14716), (2830, 14248), (3562, 11320), (3679, 10960), (4528, 8905), (5480, 7358), (5660, 7124)]