81416900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{587}}^1$

素因数の和:693

約数の個数: 72

約数和(自身を含む): 188842080

約数和(自身を除く): 107425180

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 73, 76, 95, 100, 146, 190, 292, 365, 380, 475, 587, 730, 950, 1174, 1387, 1460, 1825, 1900, 2348, 2774, 2935, 3650, 5548, 5870, 6935, 7300, 11153, 11740, 13870, 14675, 22306, 27740, 29350, 34675, 42851, 44612, 55765, 58700, 69350, 85702, 111530, 138700, 171404, 214255, 223060, 278825, 428510, 557650, 814169, 857020, 1071275, 1115300, 1628338, 2142550, 3256676, 4070845, 4285100, 8141690, 16283380, 20354225, 40708450, 81416900]

約数ペア:

[(1, 81416900), (2, 40708450), (4, 20354225), (5, 16283380), (10, 8141690), (19, 4285100), (20, 4070845), (25, 3256676), (38, 2142550), (50, 1628338), (73, 1115300), (76, 1071275), (95, 857020), (100, 814169), (146, 557650), (190, 428510), (292, 278825), (365, 223060), (380, 214255), (475, 171404), (587, 138700), (730, 111530), (950, 85702), (1174, 69350), (1387, 58700), (1460, 55765), (1825, 44612), (1900, 42851), (2348, 34675), (2774, 29350), (2935, 27740), (3650, 22306), (5548, 14675), (5870, 13870), (6935, 11740), (7300, 11153)]