21656745

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{653}}^1$

素因数の和:742

約数の個数: 48

約数和(自身を含む): 41625792

約数和(自身を除く): 19969047

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 67, 99, 165, 201, 335, 495, 603, 653, 737, 1005, 1959, 2211, 3015, 3265, 3685, 5877, 6633, 7183, 9795, 11055, 21549, 29385, 33165, 35915, 43751, 64647, 107745, 131253, 218755, 323235, 393759, 481261, 656265, 1443783, 1968795, 2406305, 4331349, 7218915, 21656745]

約数ペア:

[(1, 21656745), (3, 7218915), (5, 4331349), (9, 2406305), (11, 1968795), (15, 1443783), (33, 656265), (45, 481261), (55, 393759), (67, 323235), (99, 218755), (165, 131253), (201, 107745), (335, 64647), (495, 43751), (603, 35915), (653, 33165), (737, 29385), (1005, 21549), (1959, 11055), (2211, 9795), (3015, 7183), (3265, 6633), (3685, 5877)]