18957580

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{379}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 41559840

約数和(自身を除く): 22602260

約数列:

[1, 2, 4, 5, 10, 20, 41, 61, 82, 122, 164, 205, 244, 305, 379, 410, 610, 758, 820, 1220, 1516, 1895, 2501, 3790, 5002, 7580, 10004, 12505, 15539, 23119, 25010, 31078, 46238, 50020, 62156, 77695, 92476, 115595, 155390, 231190, 310780, 462380, 947879, 1895758, 3791516, 4739395, 9478790, 18957580]

約数ペア:

[(1, 18957580), (2, 9478790), (4, 4739395), (5, 3791516), (10, 1895758), (20, 947879), (41, 462380), (61, 310780), (82, 231190), (122, 155390), (164, 115595), (205, 92476), (244, 77695), (305, 62156), (379, 50020), (410, 46238), (610, 31078), (758, 25010), (820, 23119), (1220, 15539), (1516, 12505), (1895, 10004), (2501, 7580), (3790, 5002)]