21825705

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:318

約数の個数: 64

約数和(自身を含む): 41803776

約数和(自身を除く): 19978071

約数列:

[1, 3, 5, 11, 15, 17, 31, 33, 51, 55, 85, 93, 155, 165, 187, 251, 255, 341, 465, 527, 561, 753, 935, 1023, 1255, 1581, 1705, 2635, 2761, 2805, 3765, 4267, 5115, 5797, 7781, 7905, 8283, 12801, 13805, 17391, 21335, 23343, 28985, 38905, 41415, 46937, 64005, 85591, 86955, 116715, 132277, 140811, 234685, 256773, 396831, 427955, 661385, 704055, 1283865, 1455047, 1984155, 4365141, 7275235, 21825705]

約数ペア:

[(1, 21825705), (3, 7275235), (5, 4365141), (11, 1984155), (15, 1455047), (17, 1283865), (31, 704055), (33, 661385), (51, 427955), (55, 396831), (85, 256773), (93, 234685), (155, 140811), (165, 132277), (187, 116715), (251, 86955), (255, 85591), (341, 64005), (465, 46937), (527, 41415), (561, 38905), (753, 28985), (935, 23343), (1023, 21335), (1255, 17391), (1581, 13805), (1705, 12801), (2635, 8283), (2761, 7905), (2805, 7781), (3765, 5797), (4267, 5115)]