201555555

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{151}}^1$

素因数の和:308

約数の個数: 64

約数和(自身を含む): 349857792

約数和(自身を除く): 148302237

約数列:

[1, 3, 5, 15, 23, 53, 69, 73, 115, 151, 159, 219, 265, 345, 365, 453, 755, 795, 1095, 1219, 1679, 2265, 3473, 3657, 3869, 5037, 6095, 8003, 8395, 10419, 11023, 11607, 17365, 18285, 19345, 24009, 25185, 33069, 40015, 52095, 55115, 58035, 88987, 120045, 165345, 184069, 253529, 266961, 444935, 552207, 584219, 760587, 920345, 1267645, 1334805, 1752657, 2761035, 2921095, 3802935, 8763285, 13437037, 40311111, 67185185, 201555555]

約数ペア:

[(1, 201555555), (3, 67185185), (5, 40311111), (15, 13437037), (23, 8763285), (53, 3802935), (69, 2921095), (73, 2761035), (115, 1752657), (151, 1334805), (159, 1267645), (219, 920345), (265, 760587), (345, 584219), (365, 552207), (453, 444935), (755, 266961), (795, 253529), (1095, 184069), (1219, 165345), (1679, 120045), (2265, 88987), (3473, 58035), (3657, 55115), (3869, 52095), (5037, 40015), (6095, 33069), (8003, 25185), (8395, 24009), (10419, 19345), (11023, 18285), (11607, 17365)]