221707880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{571}}^2$

素因数の和:1170

約数の個数: 48

約数和(自身を含む): 529113060

約数和(自身を除く): 307405180

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 571, 680, 1142, 2284, 2855, 4568, 5710, 9707, 11420, 19414, 22840, 38828, 48535, 77656, 97070, 194140, 326041, 388280, 652082, 1304164, 1630205, 2608328, 3260410, 5542697, 6520820, 11085394, 13041640, 22170788, 27713485, 44341576, 55426970, 110853940, 221707880]

約数ペア:

[(1, 221707880), (2, 110853940), (4, 55426970), (5, 44341576), (8, 27713485), (10, 22170788), (17, 13041640), (20, 11085394), (34, 6520820), (40, 5542697), (68, 3260410), (85, 2608328), (136, 1630205), (170, 1304164), (340, 652082), (571, 388280), (680, 326041), (1142, 194140), (2284, 97070), (2855, 77656), (4568, 48535), (5710, 38828), (9707, 22840), (11420, 19414)]