19578951

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{181}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 34751808

約数和(自身を除く): 15172857

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 101, 119, 153, 181, 303, 357, 543, 707, 909, 1071, 1267, 1629, 1717, 2121, 3077, 3801, 5151, 6363, 9231, 11403, 12019, 15453, 18281, 21539, 27693, 36057, 54843, 64617, 108171, 127967, 164529, 193851, 310777, 383901, 932331, 1151703, 2175439, 2796993, 6526317, 19578951]

約数ペア:

[(1, 19578951), (3, 6526317), (7, 2796993), (9, 2175439), (17, 1151703), (21, 932331), (51, 383901), (63, 310777), (101, 193851), (119, 164529), (153, 127967), (181, 108171), (303, 64617), (357, 54843), (543, 36057), (707, 27693), (909, 21539), (1071, 18281), (1267, 15453), (1629, 12019), (1717, 11403), (2121, 9231), (3077, 6363), (3801, 5151)]