20411235

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:125

約数の個数: 96

約数和(自身を含む): 41827968

約数和(自身を除く): 21416733

約数列:

[1, 3, 5, 9, 13, 15, 23, 37, 39, 41, 45, 65, 69, 111, 115, 117, 123, 185, 195, 205, 207, 299, 333, 345, 369, 481, 533, 555, 585, 615, 851, 897, 943, 1035, 1443, 1495, 1517, 1599, 1665, 1845, 2405, 2553, 2665, 2691, 2829, 4255, 4329, 4485, 4551, 4715, 4797, 7215, 7585, 7659, 7995, 8487, 11063, 12259, 12765, 13455, 13653, 14145, 19721, 21645, 22755, 23985, 33189, 34891, 36777, 38295, 42435, 55315, 59163, 61295, 68265, 98605, 99567, 104673, 110331, 165945, 174455, 177489, 183885, 295815, 314019, 453583, 497835, 523365, 551655, 887445, 1360749, 1570095, 2267915, 4082247, 6803745, 20411235]

約数ペア:

[(1, 20411235), (3, 6803745), (5, 4082247), (9, 2267915), (13, 1570095), (15, 1360749), (23, 887445), (37, 551655), (39, 523365), (41, 497835), (45, 453583), (65, 314019), (69, 295815), (111, 183885), (115, 177489), (117, 174455), (123, 165945), (185, 110331), (195, 104673), (205, 99567), (207, 98605), (299, 68265), (333, 61295), (345, 59163), (369, 55315), (481, 42435), (533, 38295), (555, 36777), (585, 34891), (615, 33189), (851, 23985), (897, 22755), (943, 21645), (1035, 19721), (1443, 14145), (1495, 13653), (1517, 13455), (1599, 12765), (1665, 12259), (1845, 11063), (2405, 8487), (2553, 7995), (2665, 7659), (2691, 7585), (2829, 7215), (4255, 4797), (4329, 4715), (4485, 4551)]