280109375

素因数分解:

$5^6\times 7^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1$

素因数の和:247

約数の個数: 56

約数和(自身を含む): 433119456

約数和(自身を除く): 153010081

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 125, 175, 197, 325, 455, 625, 875, 985, 1379, 1625, 2275, 2561, 3125, 4375, 4925, 6895, 8125, 11375, 12805, 15625, 17927, 21875, 24625, 34475, 40625, 56875, 64025, 89635, 109375, 123125, 172375, 203125, 284375, 320125, 448175, 615625, 861875, 1421875, 1600625, 2240875, 3078125, 4309375, 8003125, 11204375, 21546875, 40015625, 56021875, 280109375]

約数ペア:

[(1, 280109375), (5, 56021875), (7, 40015625), (13, 21546875), (25, 11204375), (35, 8003125), (65, 4309375), (91, 3078125), (125, 2240875), (175, 1600625), (197, 1421875), (325, 861875), (455, 615625), (625, 448175), (875, 320125), (985, 284375), (1379, 203125), (1625, 172375), (2275, 123125), (2561, 109375), (3125, 89635), (4375, 64025), (4925, 56875), (6895, 40625), (8125, 34475), (11375, 24625), (12805, 21875), (15625, 17927)]