639288720

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{42281}}^1$

素因数の和:42310

約数の個数: 160

約数和(自身を含む): 2516624640

約数和(自身を除く): 1877335920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 168, 180, 189, 210, 216, 240, 252, 270, 280, 315, 336, 360, 378, 420, 432, 504, 540, 560, 630, 720, 756, 840, 945, 1008, 1080, 1260, 1512, 1680, 1890, 2160, 2520, 3024, 3780, 5040, 7560, 15120, 42281, 84562, 126843, 169124, 211405, 253686, 295967, 338248, 380529, 422810, 507372, 591934, 634215, 676496, 761058, 845620, 887901, 1014744, 1141587, 1183868, 1268430, 1479835, 1522116, 1691240, 1775802, 1902645, 2029488, 2283174, 2367736, 2536860, 2663703, 2959670, 3044232, 3382480, 3551604, 3805290, 4439505, 4566348, 4735472, 5073720, 5327406, 5707935, 5919340, 6088464, 7103208, 7610580, 7991109, 8879010, 9132696, 10147440, 10654812, 11415870, 11838680, 13318515, 14206416, 15221160, 15982218, 17758020, 18265392, 21309624, 22831740, 23677360, 26637030, 30442320, 31964436, 35516040, 39955545, 42619248, 45663480, 53274060, 63928872, 71032080, 79911090, 91326960, 106548120, 127857744, 159822180, 213096240, 319644360, 639288720]

約数ペア:

[(1, 639288720), (2, 319644360), (3, 213096240), (4, 159822180), (5, 127857744), (6, 106548120), (7, 91326960), (8, 79911090), (9, 71032080), (10, 63928872), (12, 53274060), (14, 45663480), (15, 42619248), (16, 39955545), (18, 35516040), (20, 31964436), (21, 30442320), (24, 26637030), (27, 23677360), (28, 22831740), (30, 21309624), (35, 18265392), (36, 17758020), (40, 15982218), (42, 15221160), (45, 14206416), (48, 13318515), (54, 11838680), (56, 11415870), (60, 10654812), (63, 10147440), (70, 9132696), (72, 8879010), (80, 7991109), (84, 7610580), (90, 7103208), (105, 6088464), (108, 5919340), (112, 5707935), (120, 5327406), (126, 5073720), (135, 4735472), (140, 4566348), (144, 4439505), (168, 3805290), (180, 3551604), (189, 3382480), (210, 3044232), (216, 2959670), (240, 2663703), (252, 2536860), (270, 2367736), (280, 2283174), (315, 2029488), (336, 1902645), (360, 1775802), (378, 1691240), (420, 1522116), (432, 1479835), (504, 1268430), (540, 1183868), (560, 1141587), (630, 1014744), (720, 887901), (756, 845620), (840, 761058), (945, 676496), (1008, 634215), (1080, 591934), (1260, 507372), (1512, 422810), (1680, 380529), (1890, 338248), (2160, 295967), (2520, 253686), (3024, 211405), (3780, 169124), (5040, 126843), (7560, 84562), (15120, 42281)]