1380740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:188

約数の個数: 48

約数和(自身を含む): 3193344

約数和(自身を除く): 1812604

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 62, 68, 85, 124, 131, 155, 170, 262, 310, 340, 524, 527, 620, 655, 1054, 1310, 2108, 2227, 2620, 2635, 4061, 4454, 5270, 8122, 8908, 10540, 11135, 16244, 20305, 22270, 40610, 44540, 69037, 81220, 138074, 276148, 345185, 690370, 1380740]

約数ペア:

[(1, 1380740), (2, 690370), (4, 345185), (5, 276148), (10, 138074), (17, 81220), (20, 69037), (31, 44540), (34, 40610), (62, 22270), (68, 20305), (85, 16244), (124, 11135), (131, 10540), (155, 8908), (170, 8122), (262, 5270), (310, 4454), (340, 4061), (524, 2635), (527, 2620), (620, 2227), (655, 2108), (1054, 1310)]