20485575

素因数分解:

$3^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:150

約数の個数: 96

約数和(自身を含む): 42854400

約数和(自身を除く): 22368825

約数列:

[1, 3, 5, 9, 11, 15, 25, 27, 31, 33, 45, 55, 75, 89, 93, 99, 135, 155, 165, 225, 267, 275, 279, 297, 341, 445, 465, 495, 675, 775, 801, 825, 837, 979, 1023, 1335, 1395, 1485, 1705, 2225, 2325, 2403, 2475, 2759, 2937, 3069, 4005, 4185, 4895, 5115, 6675, 6975, 7425, 8277, 8525, 8811, 9207, 12015, 13795, 14685, 15345, 20025, 20925, 24475, 24831, 25575, 26433, 30349, 41385, 44055, 46035, 60075, 68975, 73425, 74493, 76725, 91047, 124155, 132165, 151745, 206925, 220275, 230175, 273141, 372465, 455235, 620775, 660825, 758725, 819423, 1365705, 1862325, 2276175, 4097115, 6828525, 20485575]

約数ペア:

[(1, 20485575), (3, 6828525), (5, 4097115), (9, 2276175), (11, 1862325), (15, 1365705), (25, 819423), (27, 758725), (31, 660825), (33, 620775), (45, 455235), (55, 372465), (75, 273141), (89, 230175), (93, 220275), (99, 206925), (135, 151745), (155, 132165), (165, 124155), (225, 91047), (267, 76725), (275, 74493), (279, 73425), (297, 68975), (341, 60075), (445, 46035), (465, 44055), (495, 41385), (675, 30349), (775, 26433), (801, 25575), (825, 24831), (837, 24475), (979, 20925), (1023, 20025), (1335, 15345), (1395, 14685), (1485, 13795), (1705, 12015), (2225, 9207), (2325, 8811), (2403, 8525), (2475, 8277), (2759, 7425), (2937, 6975), (3069, 6675), (4005, 5115), (4185, 4895)]