20123750

素因数分解:

$2^1\times 5^4\times {\mathrm{17}}^1\times {\mathrm{947}}^1$

素因数の和:986

約数の個数: 40

約数和(自身を含む): 39980952

約数和(自身を除く): 19857202

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 125, 170, 250, 425, 625, 850, 947, 1250, 1894, 2125, 4250, 4735, 9470, 10625, 16099, 21250, 23675, 32198, 47350, 80495, 118375, 160990, 236750, 402475, 591875, 804950, 1183750, 2012375, 4024750, 10061875, 20123750]

約数ペア:

[(1, 20123750), (2, 10061875), (5, 4024750), (10, 2012375), (17, 1183750), (25, 804950), (34, 591875), (50, 402475), (85, 236750), (125, 160990), (170, 118375), (250, 80495), (425, 47350), (625, 32198), (850, 23675), (947, 21250), (1250, 16099), (1894, 10625), (2125, 9470), (4250, 4735)]