80741980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{11839}}^1$

素因数の和:11890

約数の個数: 48

約数和(自身を含む): 190955520

約数和(自身を除く): 110213540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 341, 620, 682, 1364, 1705, 3410, 6820, 11839, 23678, 47356, 59195, 118390, 130229, 236780, 260458, 367009, 520916, 651145, 734018, 1302290, 1468036, 1835045, 2604580, 3670090, 4037099, 7340180, 8074198, 16148396, 20185495, 40370990, 80741980]

約数ペア:

[(1, 80741980), (2, 40370990), (4, 20185495), (5, 16148396), (10, 8074198), (11, 7340180), (20, 4037099), (22, 3670090), (31, 2604580), (44, 1835045), (55, 1468036), (62, 1302290), (110, 734018), (124, 651145), (155, 520916), (220, 367009), (310, 260458), (341, 236780), (620, 130229), (682, 118390), (1364, 59195), (1705, 47356), (3410, 23678), (6820, 11839)]