403820

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{331}}^1$

素因数の和:401

約数の個数: 24

約数和(自身を含む): 864528

約数和(自身を除く): 460708

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 331, 610, 662, 1220, 1324, 1655, 3310, 6620, 20191, 40382, 80764, 100955, 201910, 403820]

約数ペア:

[(1, 403820), (2, 201910), (4, 100955), (5, 80764), (10, 40382), (20, 20191), (61, 6620), (122, 3310), (244, 1655), (305, 1324), (331, 1220), (610, 662)]