640290960

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1181}}^1$

素因数の和:1454

約数の個数: 160

約数和(自身を含む): 2216108160

約数和(自身を除く): 1575817200

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 120, 135, 144, 180, 216, 240, 251, 270, 360, 432, 502, 540, 720, 753, 1004, 1080, 1181, 1255, 1506, 2008, 2160, 2259, 2362, 2510, 3012, 3543, 3765, 4016, 4518, 4724, 5020, 5905, 6024, 6777, 7086, 7530, 9036, 9448, 10040, 10629, 11295, 11810, 12048, 13554, 14172, 15060, 17715, 18072, 18896, 20080, 21258, 22590, 23620, 27108, 28344, 30120, 31887, 33885, 35430, 36144, 42516, 45180, 47240, 53145, 54216, 56688, 60240, 63774, 67770, 70860, 85032, 90360, 94480, 106290, 108432, 127548, 135540, 141720, 159435, 170064, 180720, 212580, 255096, 271080, 283440, 296431, 318870, 425160, 510192, 542160, 592862, 637740, 850320, 889293, 1185724, 1275480, 1482155, 1778586, 2371448, 2550960, 2667879, 2964310, 3557172, 4446465, 4742896, 5335758, 5928620, 7114344, 8003637, 8892930, 10671516, 11857240, 13339395, 14228688, 16007274, 17785860, 21343032, 23714480, 26678790, 32014548, 35571720, 40018185, 42686064, 53357580, 64029096, 71143440, 80036370, 106715160, 128058192, 160072740, 213430320, 320145480, 640290960]

約数ペア:

[(1, 640290960), (2, 320145480), (3, 213430320), (4, 160072740), (5, 128058192), (6, 106715160), (8, 80036370), (9, 71143440), (10, 64029096), (12, 53357580), (15, 42686064), (16, 40018185), (18, 35571720), (20, 32014548), (24, 26678790), (27, 23714480), (30, 21343032), (36, 17785860), (40, 16007274), (45, 14228688), (48, 13339395), (54, 11857240), (60, 10671516), (72, 8892930), (80, 8003637), (90, 7114344), (108, 5928620), (120, 5335758), (135, 4742896), (144, 4446465), (180, 3557172), (216, 2964310), (240, 2667879), (251, 2550960), (270, 2371448), (360, 1778586), (432, 1482155), (502, 1275480), (540, 1185724), (720, 889293), (753, 850320), (1004, 637740), (1080, 592862), (1181, 542160), (1255, 510192), (1506, 425160), (2008, 318870), (2160, 296431), (2259, 283440), (2362, 271080), (2510, 255096), (3012, 212580), (3543, 180720), (3765, 170064), (4016, 159435), (4518, 141720), (4724, 135540), (5020, 127548), (5905, 108432), (6024, 106290), (6777, 94480), (7086, 90360), (7530, 85032), (9036, 70860), (9448, 67770), (10040, 63774), (10629, 60240), (11295, 56688), (11810, 54216), (12048, 53145), (13554, 47240), (14172, 45180), (15060, 42516), (17715, 36144), (18072, 35430), (18896, 33885), (20080, 31887), (21258, 30120), (22590, 28344), (23620, 27108)]