21725535

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2591}}^1$

素因数の和:2655

約数の個数: 32

約数和(自身を含む): 38320128

約数和(自身を除く): 16594593

約数列:

[1, 3, 5, 13, 15, 39, 43, 65, 129, 195, 215, 559, 645, 1677, 2591, 2795, 7773, 8385, 12955, 33683, 38865, 101049, 111413, 168415, 334239, 505245, 557065, 1448369, 1671195, 4345107, 7241845, 21725535]

約数ペア:

[(1, 21725535), (3, 7241845), (5, 4345107), (13, 1671195), (15, 1448369), (39, 557065), (43, 505245), (65, 334239), (129, 168415), (195, 111413), (215, 101049), (559, 38865), (645, 33683), (1677, 12955), (2591, 8385), (2795, 7773)]