19578975

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{467}}^1$

素因数の和:536

約数の個数: 48

約数和(自身を含む): 35747712

約数和(自身を除く): 16168737

約数列:

[1, 3, 5, 13, 15, 25, 39, 43, 65, 75, 129, 195, 215, 325, 467, 559, 645, 975, 1075, 1401, 1677, 2335, 2795, 3225, 6071, 7005, 8385, 11675, 13975, 18213, 20081, 30355, 35025, 41925, 60243, 91065, 100405, 151775, 261053, 301215, 455325, 502025, 783159, 1305265, 1506075, 3915795, 6526325, 19578975]

約数ペア:

[(1, 19578975), (3, 6526325), (5, 3915795), (13, 1506075), (15, 1305265), (25, 783159), (39, 502025), (43, 455325), (65, 301215), (75, 261053), (129, 151775), (195, 100405), (215, 91065), (325, 60243), (467, 41925), (559, 35025), (645, 30355), (975, 20081), (1075, 18213), (1401, 13975), (1677, 11675), (2335, 8385), (2795, 7005), (3225, 6071)]