21577095

素因数分解:

$3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 38918880

約数和(自身を除く): 17341785

約数列:

[1, 3, 5, 9, 15, 45, 53, 83, 109, 159, 249, 265, 327, 415, 477, 545, 747, 795, 981, 1245, 1635, 2385, 3735, 4399, 4905, 5777, 9047, 13197, 17331, 21995, 27141, 28885, 39591, 45235, 51993, 65985, 81423, 86655, 135705, 197955, 259965, 407115, 479491, 1438473, 2397455, 4315419, 7192365, 21577095]

約数ペア:

[(1, 21577095), (3, 7192365), (5, 4315419), (9, 2397455), (15, 1438473), (45, 479491), (53, 407115), (83, 259965), (109, 197955), (159, 135705), (249, 86655), (265, 81423), (327, 65985), (415, 51993), (477, 45235), (545, 39591), (747, 28885), (795, 27141), (981, 21995), (1245, 17331), (1635, 13197), (2385, 9047), (3735, 5777), (4399, 4905)]