3998120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:258

約数の個数: 64

約数和(自身を含む): 10454400

約数和(自身を除く): 6456280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 109, 131, 140, 218, 262, 280, 436, 524, 545, 655, 763, 872, 917, 1048, 1090, 1310, 1526, 1834, 2180, 2620, 3052, 3668, 3815, 4360, 4585, 5240, 6104, 7336, 7630, 9170, 14279, 15260, 18340, 28558, 30520, 36680, 57116, 71395, 99953, 114232, 142790, 199906, 285580, 399812, 499765, 571160, 799624, 999530, 1999060, 3998120]

約数ペア:

[(1, 3998120), (2, 1999060), (4, 999530), (5, 799624), (7, 571160), (8, 499765), (10, 399812), (14, 285580), (20, 199906), (28, 142790), (35, 114232), (40, 99953), (56, 71395), (70, 57116), (109, 36680), (131, 30520), (140, 28558), (218, 18340), (262, 15260), (280, 14279), (436, 9170), (524, 7630), (545, 7336), (655, 6104), (763, 5240), (872, 4585), (917, 4360), (1048, 3815), (1090, 3668), (1310, 3052), (1526, 2620), (1834, 2180)]