77928760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{271}}^1$

素因数の和:381

約数の個数: 128

約数和(自身を含む): 219340800

約数和(自身を除く): 141412040

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 79, 91, 104, 130, 140, 158, 182, 260, 271, 280, 316, 364, 395, 455, 520, 542, 553, 632, 728, 790, 910, 1027, 1084, 1106, 1355, 1580, 1820, 1897, 2054, 2168, 2212, 2710, 2765, 3160, 3523, 3640, 3794, 4108, 4424, 5135, 5420, 5530, 7046, 7189, 7588, 8216, 9485, 10270, 10840, 11060, 14092, 14378, 15176, 17615, 18970, 20540, 21409, 22120, 24661, 28184, 28756, 35230, 35945, 37940, 41080, 42818, 49322, 57512, 70460, 71890, 75880, 85636, 98644, 107045, 123305, 140920, 143780, 149863, 171272, 197288, 214090, 246610, 278317, 287560, 299726, 428180, 493220, 556634, 599452, 749315, 856360, 986440, 1113268, 1198904, 1391585, 1498630, 1948219, 2226536, 2783170, 2997260, 3896438, 5566340, 5994520, 7792876, 9741095, 11132680, 15585752, 19482190, 38964380, 77928760]

約数ペア:

[(1, 77928760), (2, 38964380), (4, 19482190), (5, 15585752), (7, 11132680), (8, 9741095), (10, 7792876), (13, 5994520), (14, 5566340), (20, 3896438), (26, 2997260), (28, 2783170), (35, 2226536), (40, 1948219), (52, 1498630), (56, 1391585), (65, 1198904), (70, 1113268), (79, 986440), (91, 856360), (104, 749315), (130, 599452), (140, 556634), (158, 493220), (182, 428180), (260, 299726), (271, 287560), (280, 278317), (316, 246610), (364, 214090), (395, 197288), (455, 171272), (520, 149863), (542, 143780), (553, 140920), (632, 123305), (728, 107045), (790, 98644), (910, 85636), (1027, 75880), (1084, 71890), (1106, 70460), (1355, 57512), (1580, 49322), (1820, 42818), (1897, 41080), (2054, 37940), (2168, 35945), (2212, 35230), (2710, 28756), (2765, 28184), (3160, 24661), (3523, 22120), (3640, 21409), (3794, 20540), (4108, 18970), (4424, 17615), (5135, 15176), (5420, 14378), (5530, 14092), (7046, 11060), (7189, 10840), (7588, 10270), (8216, 9485)]