28089980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2549}}^1$

素因数の和:2606

約数の個数: 48

約数和(自身を含む): 64260000

約数和(自身を除く): 36170020

約数列:

[1, 2, 4, 5, 10, 19, 20, 29, 38, 58, 76, 95, 116, 145, 190, 290, 380, 551, 580, 1102, 2204, 2549, 2755, 5098, 5510, 10196, 11020, 12745, 25490, 48431, 50980, 73921, 96862, 147842, 193724, 242155, 295684, 369605, 484310, 739210, 968620, 1404499, 1478420, 2808998, 5617996, 7022495, 14044990, 28089980]

約数ペア:

[(1, 28089980), (2, 14044990), (4, 7022495), (5, 5617996), (10, 2808998), (19, 1478420), (20, 1404499), (29, 968620), (38, 739210), (58, 484310), (76, 369605), (95, 295684), (116, 242155), (145, 193724), (190, 147842), (290, 96862), (380, 73921), (551, 50980), (580, 48431), (1102, 25490), (2204, 12745), (2549, 11020), (2755, 10196), (5098, 5510)]