81110810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{197}}^2$

素因数の和:431

約数の個数: 48

約数和(自身を含む): 168510240

約数和(自身を除く): 87399430

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 190, 197, 209, 394, 418, 985, 1045, 1970, 2090, 2167, 3743, 4334, 7486, 10835, 18715, 21670, 37430, 38809, 41173, 77618, 82346, 194045, 205865, 388090, 411730, 426899, 737371, 853798, 1474742, 2134495, 3686855, 4268990, 7373710, 8111081, 16222162, 40555405, 81110810]

約数ペア:

[(1, 81110810), (2, 40555405), (5, 16222162), (10, 8111081), (11, 7373710), (19, 4268990), (22, 3686855), (38, 2134495), (55, 1474742), (95, 853798), (110, 737371), (190, 426899), (197, 411730), (209, 388090), (394, 205865), (418, 194045), (985, 82346), (1045, 77618), (1970, 41173), (2090, 38809), (2167, 37430), (3743, 21670), (4334, 18715), (7486, 10835)]