399996720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{17921}}^1$

素因数の和:17971

約数の個数: 120

約数和(自身を含む): 1386732672

約数和(自身を除く): 986735952

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 36, 40, 45, 48, 60, 62, 72, 80, 90, 93, 120, 124, 144, 155, 180, 186, 240, 248, 279, 310, 360, 372, 465, 496, 558, 620, 720, 744, 930, 1116, 1240, 1395, 1488, 1860, 2232, 2480, 2790, 3720, 4464, 5580, 7440, 11160, 17921, 22320, 35842, 53763, 71684, 89605, 107526, 143368, 161289, 179210, 215052, 268815, 286736, 322578, 358420, 430104, 537630, 555551, 645156, 716840, 806445, 860208, 1075260, 1111102, 1290312, 1433680, 1612890, 1666653, 2150520, 2222204, 2580624, 2777755, 3225780, 3333306, 4301040, 4444408, 4999959, 5555510, 6451560, 6666612, 8333265, 8888816, 9999918, 11111020, 12903120, 13333224, 16666530, 19999836, 22222040, 24999795, 26666448, 33333060, 39999672, 44444080, 49999590, 66666120, 79999344, 99999180, 133332240, 199998360, 399996720]

約数ペア:

[(1, 399996720), (2, 199998360), (3, 133332240), (4, 99999180), (5, 79999344), (6, 66666120), (8, 49999590), (9, 44444080), (10, 39999672), (12, 33333060), (15, 26666448), (16, 24999795), (18, 22222040), (20, 19999836), (24, 16666530), (30, 13333224), (31, 12903120), (36, 11111020), (40, 9999918), (45, 8888816), (48, 8333265), (60, 6666612), (62, 6451560), (72, 5555510), (80, 4999959), (90, 4444408), (93, 4301040), (120, 3333306), (124, 3225780), (144, 2777755), (155, 2580624), (180, 2222204), (186, 2150520), (240, 1666653), (248, 1612890), (279, 1433680), (310, 1290312), (360, 1111102), (372, 1075260), (465, 860208), (496, 806445), (558, 716840), (620, 645156), (720, 555551), (744, 537630), (930, 430104), (1116, 358420), (1240, 322578), (1395, 286736), (1488, 268815), (1860, 215052), (2232, 179210), (2480, 161289), (2790, 143368), (3720, 107526), (4464, 89605), (5580, 71684), (7440, 53763), (11160, 35842), (17921, 22320)]