2131420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 4838400

約数和(自身を除く): 2706980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 71, 76, 79, 95, 142, 158, 190, 284, 316, 355, 380, 395, 710, 790, 1349, 1420, 1501, 1580, 2698, 3002, 5396, 5609, 6004, 6745, 7505, 11218, 13490, 15010, 22436, 26980, 28045, 30020, 56090, 106571, 112180, 213142, 426284, 532855, 1065710, 2131420]

約数ペア:

[(1, 2131420), (2, 1065710), (4, 532855), (5, 426284), (10, 213142), (19, 112180), (20, 106571), (38, 56090), (71, 30020), (76, 28045), (79, 26980), (95, 22436), (142, 15010), (158, 13490), (190, 11218), (284, 7505), (316, 6745), (355, 6004), (380, 5609), (395, 5396), (710, 3002), (790, 2698), (1349, 1580), (1420, 1501)]