19878712

素因数分解:

$2^3\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:213

約数の個数: 96

約数和(自身を含む): 48632400

約数和(自身を除く): 28753688

約数列:

[1, 2, 4, 7, 8, 14, 17, 19, 28, 34, 38, 49, 56, 68, 76, 98, 119, 133, 136, 152, 157, 196, 238, 266, 314, 323, 392, 476, 532, 628, 646, 833, 931, 952, 1064, 1099, 1256, 1292, 1666, 1862, 2198, 2261, 2584, 2669, 2983, 3332, 3724, 4396, 4522, 5338, 5966, 6664, 7448, 7693, 8792, 9044, 10676, 11932, 15386, 15827, 18088, 18683, 20881, 21352, 23864, 30772, 31654, 37366, 41762, 50711, 61544, 63308, 74732, 83524, 101422, 126616, 130781, 146167, 149464, 167048, 202844, 261562, 292334, 354977, 405688, 523124, 584668, 709954, 1046248, 1169336, 1419908, 2484839, 2839816, 4969678, 9939356, 19878712]

約数ペア:

[(1, 19878712), (2, 9939356), (4, 4969678), (7, 2839816), (8, 2484839), (14, 1419908), (17, 1169336), (19, 1046248), (28, 709954), (34, 584668), (38, 523124), (49, 405688), (56, 354977), (68, 292334), (76, 261562), (98, 202844), (119, 167048), (133, 149464), (136, 146167), (152, 130781), (157, 126616), (196, 101422), (238, 83524), (266, 74732), (314, 63308), (323, 61544), (392, 50711), (476, 41762), (532, 37366), (628, 31654), (646, 30772), (833, 23864), (931, 21352), (952, 20881), (1064, 18683), (1099, 18088), (1256, 15827), (1292, 15386), (1666, 11932), (1862, 10676), (2198, 9044), (2261, 8792), (2584, 7693), (2669, 7448), (2983, 6664), (3332, 5966), (3724, 5338), (4396, 4522)]