256985040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2657}}^1$

素因数の和:2717

約数の個数: 160

約数和(自身を含む): 885943296

約数和(自身を除く): 628958256

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 31, 39, 40, 48, 52, 60, 62, 65, 78, 80, 93, 104, 120, 124, 130, 155, 156, 186, 195, 208, 240, 248, 260, 310, 312, 372, 390, 403, 465, 496, 520, 620, 624, 744, 780, 806, 930, 1040, 1209, 1240, 1488, 1560, 1612, 1860, 2015, 2418, 2480, 2657, 3120, 3224, 3720, 4030, 4836, 5314, 6045, 6448, 7440, 7971, 8060, 9672, 10628, 12090, 13285, 15942, 16120, 19344, 21256, 24180, 26570, 31884, 32240, 34541, 39855, 42512, 48360, 53140, 63768, 69082, 79710, 82367, 96720, 103623, 106280, 127536, 138164, 159420, 164734, 172705, 207246, 212560, 247101, 276328, 318840, 329468, 345410, 411835, 414492, 494202, 518115, 552656, 637680, 658936, 690820, 823670, 828984, 988404, 1036230, 1070771, 1235505, 1317872, 1381640, 1647340, 1657968, 1976808, 2072460, 2141542, 2471010, 2763280, 3212313, 3294680, 3953616, 4144920, 4283084, 4942020, 5353855, 6424626, 6589360, 8289840, 8566168, 9884040, 10707710, 12849252, 16061565, 17132336, 19768080, 21415420, 25698504, 32123130, 42830840, 51397008, 64246260, 85661680, 128492520, 256985040]

約数ペア:

[(1, 256985040), (2, 128492520), (3, 85661680), (4, 64246260), (5, 51397008), (6, 42830840), (8, 32123130), (10, 25698504), (12, 21415420), (13, 19768080), (15, 17132336), (16, 16061565), (20, 12849252), (24, 10707710), (26, 9884040), (30, 8566168), (31, 8289840), (39, 6589360), (40, 6424626), (48, 5353855), (52, 4942020), (60, 4283084), (62, 4144920), (65, 3953616), (78, 3294680), (80, 3212313), (93, 2763280), (104, 2471010), (120, 2141542), (124, 2072460), (130, 1976808), (155, 1657968), (156, 1647340), (186, 1381640), (195, 1317872), (208, 1235505), (240, 1070771), (248, 1036230), (260, 988404), (310, 828984), (312, 823670), (372, 690820), (390, 658936), (403, 637680), (465, 552656), (496, 518115), (520, 494202), (620, 414492), (624, 411835), (744, 345410), (780, 329468), (806, 318840), (930, 276328), (1040, 247101), (1209, 212560), (1240, 207246), (1488, 172705), (1560, 164734), (1612, 159420), (1860, 138164), (2015, 127536), (2418, 106280), (2480, 103623), (2657, 96720), (3120, 82367), (3224, 79710), (3720, 69082), (4030, 63768), (4836, 53140), (5314, 48360), (6045, 42512), (6448, 39855), (7440, 34541), (7971, 32240), (8060, 31884), (9672, 26570), (10628, 24180), (12090, 21256), (13285, 19344), (15942, 16120)]