256680

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:71

約数の個数: 96

約数和(自身を含む): 898560

約数和(自身を除く): 641880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 30, 31, 36, 40, 45, 46, 60, 62, 69, 72, 90, 92, 93, 115, 120, 124, 138, 155, 180, 184, 186, 207, 230, 248, 276, 279, 310, 345, 360, 372, 414, 460, 465, 552, 558, 620, 690, 713, 744, 828, 920, 930, 1035, 1116, 1240, 1380, 1395, 1426, 1656, 1860, 2070, 2139, 2232, 2760, 2790, 2852, 3565, 3720, 4140, 4278, 5580, 5704, 6417, 7130, 8280, 8556, 10695, 11160, 12834, 14260, 17112, 21390, 25668, 28520, 32085, 42780, 51336, 64170, 85560, 128340, 256680]

約数ペア:

[(1, 256680), (2, 128340), (3, 85560), (4, 64170), (5, 51336), (6, 42780), (8, 32085), (9, 28520), (10, 25668), (12, 21390), (15, 17112), (18, 14260), (20, 12834), (23, 11160), (24, 10695), (30, 8556), (31, 8280), (36, 7130), (40, 6417), (45, 5704), (46, 5580), (60, 4278), (62, 4140), (69, 3720), (72, 3565), (90, 2852), (92, 2790), (93, 2760), (115, 2232), (120, 2139), (124, 2070), (138, 1860), (155, 1656), (180, 1426), (184, 1395), (186, 1380), (207, 1240), (230, 1116), (248, 1035), (276, 930), (279, 920), (310, 828), (345, 744), (360, 713), (372, 690), (414, 620), (460, 558), (465, 552)]