21718653

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:158

約数の個数: 48

約数和(自身を含む): 34728960

約数和(自身を除く): 13010307

約数列:

[1, 3, 11, 19, 33, 47, 57, 67, 121, 141, 201, 209, 363, 517, 627, 737, 893, 1273, 1551, 2211, 2299, 2679, 3149, 3819, 5687, 6897, 8107, 9447, 9823, 14003, 17061, 24321, 29469, 34639, 42009, 59831, 103917, 108053, 154033, 179493, 324159, 381029, 462099, 658141, 1143087, 1974423, 7239551, 21718653]

約数ペア:

[(1, 21718653), (3, 7239551), (11, 1974423), (19, 1143087), (33, 658141), (47, 462099), (57, 381029), (67, 324159), (121, 179493), (141, 154033), (201, 108053), (209, 103917), (363, 59831), (517, 42009), (627, 34639), (737, 29469), (893, 24321), (1273, 17061), (1551, 14003), (2211, 9823), (2299, 9447), (2679, 8107), (3149, 6897), (3819, 5687)]