20201520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2053}}^1$

素因数の和:2110

約数の個数: 80

約数和(自身を含む): 64183392

約数和(自身を除く): 43981872

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 41, 48, 60, 80, 82, 120, 123, 164, 205, 240, 246, 328, 410, 492, 615, 656, 820, 984, 1230, 1640, 1968, 2053, 2460, 3280, 4106, 4920, 6159, 8212, 9840, 10265, 12318, 16424, 20530, 24636, 30795, 32848, 41060, 49272, 61590, 82120, 84173, 98544, 123180, 164240, 168346, 246360, 252519, 336692, 420865, 492720, 505038, 673384, 841730, 1010076, 1262595, 1346768, 1683460, 2020152, 2525190, 3366920, 4040304, 5050380, 6733840, 10100760, 20201520]

約数ペア:

[(1, 20201520), (2, 10100760), (3, 6733840), (4, 5050380), (5, 4040304), (6, 3366920), (8, 2525190), (10, 2020152), (12, 1683460), (15, 1346768), (16, 1262595), (20, 1010076), (24, 841730), (30, 673384), (40, 505038), (41, 492720), (48, 420865), (60, 336692), (80, 252519), (82, 246360), (120, 168346), (123, 164240), (164, 123180), (205, 98544), (240, 84173), (246, 82120), (328, 61590), (410, 49272), (492, 41060), (615, 32848), (656, 30795), (820, 24636), (984, 20530), (1230, 16424), (1640, 12318), (1968, 10265), (2053, 9840), (2460, 8212), (3280, 6159), (4106, 4920)]