19480780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1213}}^1$

素因数の和:1306

約数の個数: 48

約数和(自身を含む): 45277344

約数和(自身を除く): 25796564

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 73, 110, 146, 220, 292, 365, 730, 803, 1213, 1460, 1606, 2426, 3212, 4015, 4852, 6065, 8030, 12130, 13343, 16060, 24260, 26686, 53372, 66715, 88549, 133430, 177098, 266860, 354196, 442745, 885490, 974039, 1770980, 1948078, 3896156, 4870195, 9740390, 19480780]

約数ペア:

[(1, 19480780), (2, 9740390), (4, 4870195), (5, 3896156), (10, 1948078), (11, 1770980), (20, 974039), (22, 885490), (44, 442745), (55, 354196), (73, 266860), (110, 177098), (146, 133430), (220, 88549), (292, 66715), (365, 53372), (730, 26686), (803, 24260), (1213, 16060), (1460, 13343), (1606, 12130), (2426, 8030), (3212, 6065), (4015, 4852)]