21454785

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{487}}^1$

素因数の和:598

約数の個数: 48

約数和(自身を含む): 41109120

約数和(自身を除く): 19654335

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 89, 99, 165, 267, 445, 487, 495, 801, 979, 1335, 1461, 2435, 2937, 4005, 4383, 4895, 5357, 7305, 8811, 14685, 16071, 21915, 26785, 43343, 44055, 48213, 80355, 130029, 216715, 241065, 390087, 476773, 650145, 1430319, 1950435, 2383865, 4290957, 7151595, 21454785]

約数ペア:

[(1, 21454785), (3, 7151595), (5, 4290957), (9, 2383865), (11, 1950435), (15, 1430319), (33, 650145), (45, 476773), (55, 390087), (89, 241065), (99, 216715), (165, 130029), (267, 80355), (445, 48213), (487, 44055), (495, 43343), (801, 26785), (979, 21915), (1335, 16071), (1461, 14685), (2435, 8811), (2937, 7305), (4005, 5357), (4383, 4895)]