7981000

素因数分解:

$2^3\times 5^3\times {\mathrm{23}}^1\times {\mathrm{347}}^1$

素因数の和:391

約数の個数: 64

約数和(自身を含む): 19543680

約数和(自身を除く): 11562680

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 46, 50, 92, 100, 115, 125, 184, 200, 230, 250, 347, 460, 500, 575, 694, 920, 1000, 1150, 1388, 1735, 2300, 2776, 2875, 3470, 4600, 5750, 6940, 7981, 8675, 11500, 13880, 15962, 17350, 23000, 31924, 34700, 39905, 43375, 63848, 69400, 79810, 86750, 159620, 173500, 199525, 319240, 347000, 399050, 798100, 997625, 1596200, 1995250, 3990500, 7981000]

約数ペア:

[(1, 7981000), (2, 3990500), (4, 1995250), (5, 1596200), (8, 997625), (10, 798100), (20, 399050), (23, 347000), (25, 319240), (40, 199525), (46, 173500), (50, 159620), (92, 86750), (100, 79810), (115, 69400), (125, 63848), (184, 43375), (200, 39905), (230, 34700), (250, 31924), (347, 23000), (460, 17350), (500, 15962), (575, 13880), (694, 11500), (920, 8675), (1000, 7981), (1150, 6940), (1388, 5750), (1735, 4600), (2300, 3470), (2776, 2875)]