19978266

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{521}}^1$

素因数の和:627

約数の個数: 64

約数和(自身を含む): 50512896

約数和(自身を除く): 30534630

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 77, 83, 154, 166, 231, 249, 462, 498, 521, 581, 913, 1042, 1162, 1563, 1743, 1826, 2739, 3126, 3486, 3647, 5478, 5731, 6391, 7294, 10941, 11462, 12782, 17193, 19173, 21882, 34386, 38346, 40117, 43243, 80234, 86486, 120351, 129729, 240702, 259458, 302701, 475673, 605402, 908103, 951346, 1427019, 1816206, 2854038, 3329711, 6659422, 9989133, 19978266]

約数ペア:

[(1, 19978266), (2, 9989133), (3, 6659422), (6, 3329711), (7, 2854038), (11, 1816206), (14, 1427019), (21, 951346), (22, 908103), (33, 605402), (42, 475673), (66, 302701), (77, 259458), (83, 240702), (154, 129729), (166, 120351), (231, 86486), (249, 80234), (462, 43243), (498, 40117), (521, 38346), (581, 34386), (913, 21882), (1042, 19173), (1162, 17193), (1563, 12782), (1743, 11462), (1826, 10941), (2739, 7294), (3126, 6391), (3486, 5731), (3647, 5478)]