261884920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:277

約数の個数: 128

約数和(自身を含む): 666247680

約数和(自身を除く): 404362760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 83, 88, 101, 110, 142, 166, 202, 220, 284, 332, 355, 404, 415, 440, 505, 568, 664, 710, 781, 808, 830, 913, 1010, 1111, 1420, 1562, 1660, 1826, 2020, 2222, 2840, 3124, 3320, 3652, 3905, 4040, 4444, 4565, 5555, 5893, 6248, 7171, 7304, 7810, 8383, 8888, 9130, 11110, 11786, 14342, 15620, 16766, 18260, 22220, 23572, 28684, 29465, 31240, 33532, 35855, 36520, 41915, 44440, 47144, 57368, 58930, 64823, 67064, 71710, 78881, 83830, 92213, 117860, 129646, 143420, 157762, 167660, 184426, 235720, 259292, 286840, 315524, 324115, 335320, 368852, 394405, 461065, 518584, 595193, 631048, 648230, 737704, 788810, 922130, 1190386, 1296460, 1577620, 1844260, 2380772, 2592920, 2975965, 3155240, 3688520, 4761544, 5951930, 6547123, 11903860, 13094246, 23807720, 26188492, 32735615, 52376984, 65471230, 130942460, 261884920]

約数ペア:

[(1, 261884920), (2, 130942460), (4, 65471230), (5, 52376984), (8, 32735615), (10, 26188492), (11, 23807720), (20, 13094246), (22, 11903860), (40, 6547123), (44, 5951930), (55, 4761544), (71, 3688520), (83, 3155240), (88, 2975965), (101, 2592920), (110, 2380772), (142, 1844260), (166, 1577620), (202, 1296460), (220, 1190386), (284, 922130), (332, 788810), (355, 737704), (404, 648230), (415, 631048), (440, 595193), (505, 518584), (568, 461065), (664, 394405), (710, 368852), (781, 335320), (808, 324115), (830, 315524), (913, 286840), (1010, 259292), (1111, 235720), (1420, 184426), (1562, 167660), (1660, 157762), (1826, 143420), (2020, 129646), (2222, 117860), (2840, 92213), (3124, 83830), (3320, 78881), (3652, 71710), (3905, 67064), (4040, 64823), (4444, 58930), (4565, 57368), (5555, 47144), (5893, 44440), (6248, 41915), (7171, 36520), (7304, 35855), (7810, 33532), (8383, 31240), (8888, 29465), (9130, 28684), (11110, 23572), (11786, 22220), (14342, 18260), (15620, 16766)]