398651775

素因数分解:

$3^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{1103}}^1$

素因数の和:1256

約数の個数: 48

約数和(自身を含む): 679004160

約数和(自身を除く): 280352385

約数列:

[1, 3, 5, 15, 25, 61, 75, 79, 183, 237, 305, 395, 915, 1103, 1185, 1525, 1975, 3309, 4575, 4819, 5515, 5925, 14457, 16545, 24095, 27575, 67283, 72285, 82725, 87137, 120475, 201849, 261411, 336415, 361425, 435685, 1009245, 1307055, 1682075, 2178425, 5046225, 5315357, 6535275, 15946071, 26576785, 79730355, 132883925, 398651775]

約数ペア:

[(1, 398651775), (3, 132883925), (5, 79730355), (15, 26576785), (25, 15946071), (61, 6535275), (75, 5315357), (79, 5046225), (183, 2178425), (237, 1682075), (305, 1307055), (395, 1009245), (915, 435685), (1103, 361425), (1185, 336415), (1525, 261411), (1975, 201849), (3309, 120475), (4575, 87137), (4819, 82725), (5515, 72285), (5925, 67283), (14457, 27575), (16545, 24095)]