20449396

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{401}}^1$

素因数の和:496

約数の個数: 48

約数和(自身を含む): 41872320

約数和(自身を除く): 21422924

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 61, 76, 122, 209, 244, 401, 418, 671, 802, 836, 1159, 1342, 1604, 2318, 2684, 4411, 4636, 7619, 8822, 12749, 15238, 17644, 24461, 25498, 30476, 48922, 50996, 83809, 97844, 167618, 269071, 335236, 464759, 538142, 929518, 1076284, 1859036, 5112349, 10224698, 20449396]

約数ペア:

[(1, 20449396), (2, 10224698), (4, 5112349), (11, 1859036), (19, 1076284), (22, 929518), (38, 538142), (44, 464759), (61, 335236), (76, 269071), (122, 167618), (209, 97844), (244, 83809), (401, 50996), (418, 48922), (671, 30476), (802, 25498), (836, 24461), (1159, 17644), (1342, 15238), (1604, 12749), (2318, 8822), (2684, 7619), (4411, 4636)]