81999180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{271}}^1$

素因数の和:368

約数の個数: 108

約数和(自身を含む): 255886176

約数和(自身を除く): 173886996

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 41, 45, 60, 82, 90, 123, 164, 180, 205, 246, 271, 369, 410, 492, 542, 615, 738, 813, 820, 1084, 1230, 1355, 1476, 1626, 1681, 1845, 2439, 2460, 2710, 3252, 3362, 3690, 4065, 4878, 5043, 5420, 6724, 7380, 8130, 8405, 9756, 10086, 11111, 12195, 15129, 16260, 16810, 20172, 22222, 24390, 25215, 30258, 33333, 33620, 44444, 48780, 50430, 55555, 60516, 66666, 75645, 99999, 100860, 111110, 133332, 151290, 166665, 199998, 222220, 302580, 333330, 399996, 455551, 499995, 666660, 911102, 999990, 1366653, 1822204, 1999980, 2277755, 2733306, 4099959, 4555510, 5466612, 6833265, 8199918, 9111020, 13666530, 16399836, 20499795, 27333060, 40999590, 81999180]

約数ペア:

[(1, 81999180), (2, 40999590), (3, 27333060), (4, 20499795), (5, 16399836), (6, 13666530), (9, 9111020), (10, 8199918), (12, 6833265), (15, 5466612), (18, 4555510), (20, 4099959), (30, 2733306), (36, 2277755), (41, 1999980), (45, 1822204), (60, 1366653), (82, 999990), (90, 911102), (123, 666660), (164, 499995), (180, 455551), (205, 399996), (246, 333330), (271, 302580), (369, 222220), (410, 199998), (492, 166665), (542, 151290), (615, 133332), (738, 111110), (813, 100860), (820, 99999), (1084, 75645), (1230, 66666), (1355, 60516), (1476, 55555), (1626, 50430), (1681, 48780), (1845, 44444), (2439, 33620), (2460, 33333), (2710, 30258), (3252, 25215), (3362, 24390), (3690, 22222), (4065, 20172), (4878, 16810), (5043, 16260), (5420, 15129), (6724, 12195), (7380, 11111), (8130, 10086), (8405, 9756)]