21953750

素因数分解:

$2^1\times 5^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1$

素因数の和:235

約数の個数: 80

約数和(自身を含む): 50908704

約数和(自身を除く): 28954954

約数列:

[1, 2, 5, 7, 10, 13, 14, 25, 26, 35, 50, 65, 70, 91, 125, 130, 175, 182, 193, 250, 325, 350, 386, 455, 625, 650, 875, 910, 965, 1250, 1351, 1625, 1750, 1930, 2275, 2509, 2702, 3250, 4375, 4550, 4825, 5018, 6755, 8125, 8750, 9650, 11375, 12545, 13510, 16250, 17563, 22750, 24125, 25090, 33775, 35126, 48250, 56875, 62725, 67550, 87815, 113750, 120625, 125450, 168875, 175630, 241250, 313625, 337750, 439075, 627250, 844375, 878150, 1568125, 1688750, 2195375, 3136250, 4390750, 10976875, 21953750]

約数ペア:

[(1, 21953750), (2, 10976875), (5, 4390750), (7, 3136250), (10, 2195375), (13, 1688750), (14, 1568125), (25, 878150), (26, 844375), (35, 627250), (50, 439075), (65, 337750), (70, 313625), (91, 241250), (125, 175630), (130, 168875), (175, 125450), (182, 120625), (193, 113750), (250, 87815), (325, 67550), (350, 62725), (386, 56875), (455, 48250), (625, 35126), (650, 33775), (875, 25090), (910, 24125), (965, 22750), (1250, 17563), (1351, 16250), (1625, 13510), (1750, 12545), (1930, 11375), (2275, 9650), (2509, 8750), (2702, 8125), (3250, 6755), (4375, 5018), (4550, 4825)]