21802671

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{173}}^1$

素因数の和:276

約数の個数: 48

約数和(自身を含む): 36915840

約数和(自身を除く): 15113169

約数列:

[1, 3, 9, 11, 19, 33, 57, 67, 99, 171, 173, 201, 209, 519, 603, 627, 737, 1273, 1557, 1881, 1903, 2211, 3287, 3819, 5709, 6633, 9861, 11457, 11591, 14003, 17127, 29583, 34773, 36157, 42009, 104319, 108471, 126027, 127501, 220229, 325413, 382503, 660687, 1147509, 1982061, 2422519, 7267557, 21802671]

約数ペア:

[(1, 21802671), (3, 7267557), (9, 2422519), (11, 1982061), (19, 1147509), (33, 660687), (57, 382503), (67, 325413), (99, 220229), (171, 127501), (173, 126027), (201, 108471), (209, 104319), (519, 42009), (603, 36157), (627, 34773), (737, 29583), (1273, 17127), (1557, 14003), (1881, 11591), (1903, 11457), (2211, 9861), (3287, 6633), (3819, 5709)]