261380808

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^2\times {\mathrm{21481}}^1$

素因数の和:21519

約数の個数: 72

約数和(自身を含む): 766585170

約数和(自身を除く): 505204362

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 104, 117, 156, 169, 234, 312, 338, 468, 507, 676, 936, 1014, 1352, 1521, 2028, 3042, 4056, 6084, 12168, 21481, 42962, 64443, 85924, 128886, 171848, 193329, 257772, 279253, 386658, 515544, 558506, 773316, 837759, 1117012, 1546632, 1675518, 2234024, 2513277, 3351036, 3630289, 5026554, 6702072, 7260578, 10053108, 10890867, 14521156, 20106216, 21781734, 29042312, 32672601, 43563468, 65345202, 87126936, 130690404, 261380808]

約数ペア:

[(1, 261380808), (2, 130690404), (3, 87126936), (4, 65345202), (6, 43563468), (8, 32672601), (9, 29042312), (12, 21781734), (13, 20106216), (18, 14521156), (24, 10890867), (26, 10053108), (36, 7260578), (39, 6702072), (52, 5026554), (72, 3630289), (78, 3351036), (104, 2513277), (117, 2234024), (156, 1675518), (169, 1546632), (234, 1117012), (312, 837759), (338, 773316), (468, 558506), (507, 515544), (676, 386658), (936, 279253), (1014, 257772), (1352, 193329), (1521, 171848), (2028, 128886), (3042, 85924), (4056, 64443), (6084, 42962), (12168, 21481)]