280694980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{379}}^1\times {\mathrm{1949}}^1$

素因数の和:2356

約数の個数: 48

約数和(自身を含む): 622440000

約数和(自身を除く): 341745020

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 379, 380, 758, 1516, 1895, 1949, 3790, 3898, 7201, 7580, 7796, 9745, 14402, 19490, 28804, 36005, 37031, 38980, 72010, 74062, 144020, 148124, 185155, 370310, 738671, 740620, 1477342, 2954684, 3693355, 7386710, 14034749, 14773420, 28069498, 56138996, 70173745, 140347490, 280694980]

約数ペア:

[(1, 280694980), (2, 140347490), (4, 70173745), (5, 56138996), (10, 28069498), (19, 14773420), (20, 14034749), (38, 7386710), (76, 3693355), (95, 2954684), (190, 1477342), (379, 740620), (380, 738671), (758, 370310), (1516, 185155), (1895, 148124), (1949, 144020), (3790, 74062), (3898, 72010), (7201, 38980), (7580, 37031), (7796, 36005), (9745, 28804), (14402, 19490)]