81231745

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1$

素因数の和:214

約数の個数: 64

約数和(自身を含む): 126074880

約数和(自身を除く): 44843135

約数列:

[1, 5, 7, 19, 23, 35, 47, 95, 113, 115, 133, 161, 235, 329, 437, 565, 665, 791, 805, 893, 1081, 1645, 2147, 2185, 2599, 3059, 3955, 4465, 5311, 5405, 6251, 7567, 10735, 12995, 15029, 15295, 18193, 20539, 26555, 31255, 37177, 37835, 49381, 75145, 90965, 100909, 102695, 122153, 143773, 185885, 246905, 345667, 504545, 610765, 706363, 718865, 855071, 1728335, 2320907, 3531815, 4275355, 11604535, 16246349, 81231745]

約数ペア:

[(1, 81231745), (5, 16246349), (7, 11604535), (19, 4275355), (23, 3531815), (35, 2320907), (47, 1728335), (95, 855071), (113, 718865), (115, 706363), (133, 610765), (161, 504545), (235, 345667), (329, 246905), (437, 185885), (565, 143773), (665, 122153), (791, 102695), (805, 100909), (893, 90965), (1081, 75145), (1645, 49381), (2147, 37835), (2185, 37177), (2599, 31255), (3059, 26555), (3955, 20539), (4465, 18193), (5311, 15295), (5405, 15029), (6251, 12995), (7567, 10735)]