21455850

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{11003}}^1$

素因数の和:11031

約数の個数: 48

約数和(自身を含む): 57308832

約数和(自身を除く): 35852982

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 130, 150, 195, 325, 390, 650, 975, 1950, 11003, 22006, 33009, 55015, 66018, 110030, 143039, 165045, 275075, 286078, 330090, 429117, 550150, 715195, 825225, 858234, 1430390, 1650450, 2145585, 3575975, 4291170, 7151950, 10727925, 21455850]

約数ペア:

[(1, 21455850), (2, 10727925), (3, 7151950), (5, 4291170), (6, 3575975), (10, 2145585), (13, 1650450), (15, 1430390), (25, 858234), (26, 825225), (30, 715195), (39, 550150), (50, 429117), (65, 330090), (75, 286078), (78, 275075), (130, 165045), (150, 143039), (195, 110030), (325, 66018), (390, 55015), (650, 33009), (975, 22006), (1950, 11003)]