311780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 798336

約数和(自身を除く): 486556

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 131, 140, 170, 238, 262, 340, 476, 524, 595, 655, 917, 1190, 1310, 1834, 2227, 2380, 2620, 3668, 4454, 4585, 8908, 9170, 11135, 15589, 18340, 22270, 31178, 44540, 62356, 77945, 155890, 311780]

約数ペア:

[(1, 311780), (2, 155890), (4, 77945), (5, 62356), (7, 44540), (10, 31178), (14, 22270), (17, 18340), (20, 15589), (28, 11135), (34, 9170), (35, 8908), (68, 4585), (70, 4454), (85, 3668), (119, 2620), (131, 2380), (140, 2227), (170, 1834), (238, 1310), (262, 1190), (340, 917), (476, 655), (524, 595)]