20778868628

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{274751}}^1$

素因数の和:274872

約数の個数: 48

約数和(自身を含む): 43265746944

約数和(自身を除く): 22486878316

約数列:

[1, 2, 4, 7, 14, 28, 37, 73, 74, 146, 148, 259, 292, 511, 518, 1022, 1036, 2044, 2701, 5402, 10804, 18907, 37814, 75628, 274751, 549502, 1099004, 1923257, 3846514, 7693028, 10165787, 20056823, 20331574, 40113646, 40663148, 71160509, 80227292, 140397761, 142321018, 280795522, 284642036, 561591044, 742102451, 1484204902, 2968409804, 5194717157, 10389434314, 20778868628]

約数ペア:

[(1, 20778868628), (2, 10389434314), (4, 5194717157), (7, 2968409804), (14, 1484204902), (28, 742102451), (37, 561591044), (73, 284642036), (74, 280795522), (146, 142321018), (148, 140397761), (259, 80227292), (292, 71160509), (511, 40663148), (518, 40113646), (1022, 20331574), (1036, 20056823), (2044, 10165787), (2701, 7693028), (5402, 3846514), (10804, 1923257), (18907, 1099004), (37814, 549502), (75628, 274751)]