289222760

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{101839}}^1$

素因数の和:101921

約数の個数: 32

約数和(自身を含む): 659923200

約数和(自身を除く): 370700440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 101839, 203678, 407356, 509195, 814712, 1018390, 2036780, 4073560, 7230569, 14461138, 28922276, 36152845, 57844552, 72305690, 144611380, 289222760]

約数ペア:

[(1, 289222760), (2, 144611380), (4, 72305690), (5, 57844552), (8, 36152845), (10, 28922276), (20, 14461138), (40, 7230569), (71, 4073560), (142, 2036780), (284, 1018390), (355, 814712), (568, 509195), (710, 407356), (1420, 203678), (2840, 101839)]