172409720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{615749}}^1$

素因数の和:615767

約数の個数: 32

約数和(自身を含む): 443340000

約数和(自身を除く): 270930280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 615749, 1231498, 2462996, 3078745, 4310243, 4925992, 6157490, 8620486, 12314980, 17240972, 21551215, 24629960, 34481944, 43102430, 86204860, 172409720]

約数ペア:

[(1, 172409720), (2, 86204860), (4, 43102430), (5, 34481944), (7, 24629960), (8, 21551215), (10, 17240972), (14, 12314980), (20, 8620486), (28, 6157490), (35, 4925992), (40, 4310243), (56, 3078745), (70, 2462996), (140, 1231498), (280, 615749)]