19730840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{227}}^1$

素因数の和:332

約数の個数: 64

約数和(自身を含む): 46539360

約数和(自身を除く): 26808520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 53, 82, 106, 164, 205, 212, 227, 265, 328, 410, 424, 454, 530, 820, 908, 1060, 1135, 1640, 1816, 2120, 2173, 2270, 4346, 4540, 8692, 9080, 9307, 10865, 12031, 17384, 18614, 21730, 24062, 37228, 43460, 46535, 48124, 60155, 74456, 86920, 93070, 96248, 120310, 186140, 240620, 372280, 481240, 493271, 986542, 1973084, 2466355, 3946168, 4932710, 9865420, 19730840]

約数ペア:

[(1, 19730840), (2, 9865420), (4, 4932710), (5, 3946168), (8, 2466355), (10, 1973084), (20, 986542), (40, 493271), (41, 481240), (53, 372280), (82, 240620), (106, 186140), (164, 120310), (205, 96248), (212, 93070), (227, 86920), (265, 74456), (328, 60155), (410, 48124), (424, 46535), (454, 43460), (530, 37228), (820, 24062), (908, 21730), (1060, 18614), (1135, 17384), (1640, 12031), (1816, 10865), (2120, 9307), (2173, 9080), (2270, 8692), (4346, 4540)]