257743980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{4789}}^1$

素因数の和:4840

約数の個数: 144

約数和(自身を含む): 878754240

約数和(自身を除く): 621010260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 23, 26, 30, 36, 39, 45, 46, 52, 60, 65, 69, 78, 90, 92, 115, 117, 130, 138, 156, 180, 195, 207, 230, 234, 260, 276, 299, 345, 390, 414, 460, 468, 585, 598, 690, 780, 828, 897, 1035, 1170, 1196, 1380, 1495, 1794, 2070, 2340, 2691, 2990, 3588, 4140, 4485, 4789, 5382, 5980, 8970, 9578, 10764, 13455, 14367, 17940, 19156, 23945, 26910, 28734, 43101, 47890, 53820, 57468, 62257, 71835, 86202, 95780, 110147, 124514, 143670, 172404, 186771, 215505, 220294, 249028, 287340, 311285, 330441, 373542, 431010, 440588, 550735, 560313, 622570, 660882, 747084, 862020, 933855, 991323, 1101470, 1120626, 1245140, 1321764, 1431911, 1652205, 1867710, 1982646, 2202940, 2241252, 2801565, 2863822, 3304410, 3735420, 3965292, 4295733, 4956615, 5603130, 5727644, 6608820, 7159555, 8591466, 9913230, 11206260, 12887199, 14319110, 17182932, 19826460, 21478665, 25774398, 28638220, 42957330, 51548796, 64435995, 85914660, 128871990, 257743980]

約数ペア:

[(1, 257743980), (2, 128871990), (3, 85914660), (4, 64435995), (5, 51548796), (6, 42957330), (9, 28638220), (10, 25774398), (12, 21478665), (13, 19826460), (15, 17182932), (18, 14319110), (20, 12887199), (23, 11206260), (26, 9913230), (30, 8591466), (36, 7159555), (39, 6608820), (45, 5727644), (46, 5603130), (52, 4956615), (60, 4295733), (65, 3965292), (69, 3735420), (78, 3304410), (90, 2863822), (92, 2801565), (115, 2241252), (117, 2202940), (130, 1982646), (138, 1867710), (156, 1652205), (180, 1431911), (195, 1321764), (207, 1245140), (230, 1120626), (234, 1101470), (260, 991323), (276, 933855), (299, 862020), (345, 747084), (390, 660882), (414, 622570), (460, 560313), (468, 550735), (585, 440588), (598, 431010), (690, 373542), (780, 330441), (828, 311285), (897, 287340), (1035, 249028), (1170, 220294), (1196, 215505), (1380, 186771), (1495, 172404), (1794, 143670), (2070, 124514), (2340, 110147), (2691, 95780), (2990, 86202), (3588, 71835), (4140, 62257), (4485, 57468), (4789, 53820), (5382, 47890), (5980, 43101), (8970, 28734), (9578, 26910), (10764, 23945), (13455, 19156), (14367, 17940)]