19913355

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{821}}^1$

素因数の和:857

約数の個数: 72

約数和(自身を含む): 43855344

約数和(自身を除く): 23941989

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 49, 55, 63, 77, 99, 105, 147, 165, 231, 245, 315, 385, 441, 495, 539, 693, 735, 821, 1155, 1617, 2205, 2463, 2695, 3465, 4105, 4851, 5747, 7389, 8085, 9031, 12315, 17241, 24255, 27093, 28735, 36945, 40229, 45155, 51723, 63217, 81279, 86205, 120687, 135465, 189651, 201145, 258615, 316085, 362061, 406395, 442519, 568953, 603435, 948255, 1327557, 1810305, 2212595, 2844765, 3982671, 6637785, 19913355]

約数ペア:

[(1, 19913355), (3, 6637785), (5, 3982671), (7, 2844765), (9, 2212595), (11, 1810305), (15, 1327557), (21, 948255), (33, 603435), (35, 568953), (45, 442519), (49, 406395), (55, 362061), (63, 316085), (77, 258615), (99, 201145), (105, 189651), (147, 135465), (165, 120687), (231, 86205), (245, 81279), (315, 63217), (385, 51723), (441, 45155), (495, 40229), (539, 36945), (693, 28735), (735, 27093), (821, 24255), (1155, 17241), (1617, 12315), (2205, 9031), (2463, 8085), (2695, 7389), (3465, 5747), (4105, 4851)]