21288436

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{743}}^1$

素因数の和:808

約数の個数: 48

約数和(自身を含む): 43747200

約数和(自身を除く): 22458764

約数列:

[1, 2, 4, 13, 19, 26, 29, 38, 52, 58, 76, 116, 247, 377, 494, 551, 743, 754, 988, 1102, 1486, 1508, 2204, 2972, 7163, 9659, 14117, 14326, 19318, 21547, 28234, 28652, 38636, 43094, 56468, 86188, 183521, 280111, 367042, 409393, 560222, 734084, 818786, 1120444, 1637572, 5322109, 10644218, 21288436]

約数ペア:

[(1, 21288436), (2, 10644218), (4, 5322109), (13, 1637572), (19, 1120444), (26, 818786), (29, 734084), (38, 560222), (52, 409393), (58, 367042), (76, 280111), (116, 183521), (247, 86188), (377, 56468), (494, 43094), (551, 38636), (743, 28652), (754, 28234), (988, 21547), (1102, 19318), (1486, 14326), (1508, 14117), (2204, 9659), (2972, 7163)]