20956859888

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{229}}^1\times {\mathrm{2143}}^1$

素因数の和:2554

約数の個数: 80

約数和(自身を含む): 43475431680

約数和(自身を除く): 22518571792

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 157, 229, 272, 314, 458, 628, 916, 1256, 1832, 2143, 2512, 2669, 3664, 3893, 4286, 5338, 7786, 8572, 10676, 15572, 17144, 21352, 31144, 34288, 35953, 36431, 42704, 62288, 71906, 72862, 143812, 145724, 287624, 291448, 336451, 490747, 575248, 582896, 611201, 672902, 981494, 1222402, 1345804, 1962988, 2444804, 2691608, 3925976, 4889608, 5383216, 5719667, 7851952, 8342699, 9779216, 11439334, 16685398, 22878668, 33370796, 45757336, 66741592, 77047279, 91514672, 133483184, 154094558, 308189116, 616378232, 1232756464, 1309803743, 2619607486, 5239214972, 10478429944, 20956859888]

約数ペア:

[(1, 20956859888), (2, 10478429944), (4, 5239214972), (8, 2619607486), (16, 1309803743), (17, 1232756464), (34, 616378232), (68, 308189116), (136, 154094558), (157, 133483184), (229, 91514672), (272, 77047279), (314, 66741592), (458, 45757336), (628, 33370796), (916, 22878668), (1256, 16685398), (1832, 11439334), (2143, 9779216), (2512, 8342699), (2669, 7851952), (3664, 5719667), (3893, 5383216), (4286, 4889608), (5338, 3925976), (7786, 2691608), (8572, 2444804), (10676, 1962988), (15572, 1345804), (17144, 1222402), (21352, 981494), (31144, 672902), (34288, 611201), (35953, 582896), (36431, 575248), (42704, 490747), (62288, 336451), (71906, 291448), (72862, 287624), (143812, 145724)]