18003880

素因数分解:

$2^3\times 5^1\times {\mathrm{659}}^1\times {\mathrm{683}}^1$

素因数の和:1353

約数の個数: 32

約数和(自身を含む): 40629600

約数和(自身を除く): 22625720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 659, 683, 1318, 1366, 2636, 2732, 3295, 3415, 5272, 5464, 6590, 6830, 13180, 13660, 26360, 27320, 450097, 900194, 1800388, 2250485, 3600776, 4500970, 9001940, 18003880]

約数ペア:

[(1, 18003880), (2, 9001940), (4, 4500970), (5, 3600776), (8, 2250485), (10, 1800388), (20, 900194), (40, 450097), (659, 27320), (683, 26360), (1318, 13660), (1366, 13180), (2636, 6830), (2732, 6590), (3295, 5464), (3415, 5272)]