19756425

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{881}}^1$

素因数の和:930

約数の個数: 48

約数和(自身を含む): 36747648

約数和(自身を除く): 16991223

約数列:

[1, 3, 5, 13, 15, 23, 25, 39, 65, 69, 75, 115, 195, 299, 325, 345, 575, 881, 897, 975, 1495, 1725, 2643, 4405, 4485, 7475, 11453, 13215, 20263, 22025, 22425, 34359, 57265, 60789, 66075, 101315, 171795, 263419, 286325, 303945, 506575, 790257, 858975, 1317095, 1519725, 3951285, 6585475, 19756425]

約数ペア:

[(1, 19756425), (3, 6585475), (5, 3951285), (13, 1519725), (15, 1317095), (23, 858975), (25, 790257), (39, 506575), (65, 303945), (69, 286325), (75, 263419), (115, 171795), (195, 101315), (299, 66075), (325, 60789), (345, 57265), (575, 34359), (881, 22425), (897, 22025), (975, 20263), (1495, 13215), (1725, 11453), (2643, 7475), (4405, 4485)]