18677240

素因数分解:

$2^3\times 5^1\times {\mathrm{229}}^1\times {\mathrm{2039}}^1$

素因数の和:2279

約数の個数: 32

約数和(自身を含む): 42228000

約数和(自身を除く): 23550760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 229, 458, 916, 1145, 1832, 2039, 2290, 4078, 4580, 8156, 9160, 10195, 16312, 20390, 40780, 81560, 466931, 933862, 1867724, 2334655, 3735448, 4669310, 9338620, 18677240]

約数ペア:

[(1, 18677240), (2, 9338620), (4, 4669310), (5, 3735448), (8, 2334655), (10, 1867724), (20, 933862), (40, 466931), (229, 81560), (458, 40780), (916, 20390), (1145, 16312), (1832, 10195), (2039, 9160), (2290, 8156), (4078, 4580)]