78421875

素因数分解:

$3^1\times 5^6\times 7^1\times {\mathrm{239}}^1$

素因数の和:279

約数の個数: 56

約数和(自身を含む): 149998080

約数和(自身を除く): 71576205

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 125, 175, 239, 375, 525, 625, 717, 875, 1195, 1673, 1875, 2625, 3125, 3585, 4375, 5019, 5975, 8365, 9375, 13125, 15625, 17925, 21875, 25095, 29875, 41825, 46875, 65625, 89625, 109375, 125475, 149375, 209125, 328125, 448125, 627375, 746875, 1045625, 2240625, 3136875, 3734375, 5228125, 11203125, 15684375, 26140625, 78421875]

約数ペア:

[(1, 78421875), (3, 26140625), (5, 15684375), (7, 11203125), (15, 5228125), (21, 3734375), (25, 3136875), (35, 2240625), (75, 1045625), (105, 746875), (125, 627375), (175, 448125), (239, 328125), (375, 209125), (525, 149375), (625, 125475), (717, 109375), (875, 89625), (1195, 65625), (1673, 46875), (1875, 41825), (2625, 29875), (3125, 25095), (3585, 21875), (4375, 17925), (5019, 15625), (5975, 13125), (8365, 9375)]