161285560

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{130069}}^1$

素因数の和:130111

約数の個数: 32

約数和(自身を含む): 374601600

約数和(自身を除く): 213316040

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 130069, 260138, 520276, 650345, 1040552, 1300690, 2601380, 4032139, 5202760, 8064278, 16128556, 20160695, 32257112, 40321390, 80642780, 161285560]

約数ペア:

[(1, 161285560), (2, 80642780), (4, 40321390), (5, 32257112), (8, 20160695), (10, 16128556), (20, 8064278), (31, 5202760), (40, 4032139), (62, 2601380), (124, 1300690), (155, 1040552), (248, 650345), (310, 520276), (620, 260138), (1240, 130069)]