21551750

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{461}}^1$

素因数の和:506

約数の個数: 64

約数和(自身を含む): 46702656

約数和(自身を除く): 25150906

約数列:

[1, 2, 5, 10, 11, 17, 22, 25, 34, 50, 55, 85, 110, 125, 170, 187, 250, 275, 374, 425, 461, 550, 850, 922, 935, 1375, 1870, 2125, 2305, 2750, 4250, 4610, 4675, 5071, 7837, 9350, 10142, 11525, 15674, 23050, 23375, 25355, 39185, 46750, 50710, 57625, 78370, 86207, 115250, 126775, 172414, 195925, 253550, 391850, 431035, 633875, 862070, 979625, 1267750, 1959250, 2155175, 4310350, 10775875, 21551750]

約数ペア:

[(1, 21551750), (2, 10775875), (5, 4310350), (10, 2155175), (11, 1959250), (17, 1267750), (22, 979625), (25, 862070), (34, 633875), (50, 431035), (55, 391850), (85, 253550), (110, 195925), (125, 172414), (170, 126775), (187, 115250), (250, 86207), (275, 78370), (374, 57625), (425, 50710), (461, 46750), (550, 39185), (850, 25355), (922, 23375), (935, 23050), (1375, 15674), (1870, 11525), (2125, 10142), (2305, 9350), (2750, 7837), (4250, 5071), (4610, 4675)]