12811540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{769}}^1$

素因数の和:809

約数の個数: 72

約数和(自身を含む): 33180840

約数和(自身を除く): 20369300

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 49, 68, 70, 85, 98, 119, 140, 170, 196, 238, 245, 340, 476, 490, 595, 769, 833, 980, 1190, 1538, 1666, 2380, 3076, 3332, 3845, 4165, 5383, 7690, 8330, 10766, 13073, 15380, 16660, 21532, 26146, 26915, 37681, 52292, 53830, 65365, 75362, 91511, 107660, 130730, 150724, 183022, 188405, 261460, 366044, 376810, 457555, 640577, 753620, 915110, 1281154, 1830220, 2562308, 3202885, 6405770, 12811540]

約数ペア:

[(1, 12811540), (2, 6405770), (4, 3202885), (5, 2562308), (7, 1830220), (10, 1281154), (14, 915110), (17, 753620), (20, 640577), (28, 457555), (34, 376810), (35, 366044), (49, 261460), (68, 188405), (70, 183022), (85, 150724), (98, 130730), (119, 107660), (140, 91511), (170, 75362), (196, 65365), (238, 53830), (245, 52292), (340, 37681), (476, 26915), (490, 26146), (595, 21532), (769, 16660), (833, 15380), (980, 13073), (1190, 10766), (1538, 8330), (1666, 7690), (2380, 5383), (3076, 4165), (3332, 3845)]