157780

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{23}}^1$

素因数の和:53

約数の個数: 48

約数和(自身を含む): 403200

約数和(自身を除く): 245420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 92, 98, 115, 140, 161, 196, 230, 245, 322, 343, 460, 490, 644, 686, 805, 980, 1127, 1372, 1610, 1715, 2254, 3220, 3430, 4508, 5635, 6860, 7889, 11270, 15778, 22540, 31556, 39445, 78890, 157780]

約数ペア:

[(1, 157780), (2, 78890), (4, 39445), (5, 31556), (7, 22540), (10, 15778), (14, 11270), (20, 7889), (23, 6860), (28, 5635), (35, 4508), (46, 3430), (49, 3220), (70, 2254), (92, 1715), (98, 1610), (115, 1372), (140, 1127), (161, 980), (196, 805), (230, 686), (245, 644), (322, 490), (343, 460)]