78465920

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9431}}^1$

素因数の和:9463

約数の個数: 64

約数和(自身を含む): 202033440

約数和(自身を除く): 123567520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 4160, 8320, 9431, 18862, 37724, 47155, 75448, 94310, 122603, 150896, 188620, 245206, 301792, 377240, 490412, 603584, 613015, 754480, 980824, 1207168, 1226030, 1508960, 1961648, 2452060, 3017920, 3923296, 4904120, 6035840, 7846592, 9808240, 15693184, 19616480, 39232960, 78465920]

約数ペア:

[(1, 78465920), (2, 39232960), (4, 19616480), (5, 15693184), (8, 9808240), (10, 7846592), (13, 6035840), (16, 4904120), (20, 3923296), (26, 3017920), (32, 2452060), (40, 1961648), (52, 1508960), (64, 1226030), (65, 1207168), (80, 980824), (104, 754480), (128, 613015), (130, 603584), (160, 490412), (208, 377240), (260, 301792), (320, 245206), (416, 188620), (520, 150896), (640, 122603), (832, 94310), (1040, 75448), (1664, 47155), (2080, 37724), (4160, 18862), (8320, 9431)]