13920705

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{587}}^1$

素因数の和:646

約数の個数: 48

約数和(自身を含む): 26417664

約数和(自身を除く): 12496959

約数列:

[1, 3, 5, 9, 15, 17, 31, 45, 51, 85, 93, 153, 155, 255, 279, 465, 527, 587, 765, 1395, 1581, 1761, 2635, 2935, 4743, 5283, 7905, 8805, 9979, 18197, 23715, 26415, 29937, 49895, 54591, 89811, 90985, 149685, 163773, 272955, 309349, 449055, 818865, 928047, 1546745, 2784141, 4640235, 13920705]

約数ペア:

[(1, 13920705), (3, 4640235), (5, 2784141), (9, 1546745), (15, 928047), (17, 818865), (31, 449055), (45, 309349), (51, 272955), (85, 163773), (93, 149685), (153, 90985), (155, 89811), (255, 54591), (279, 49895), (465, 29937), (527, 26415), (587, 23715), (765, 18197), (1395, 9979), (1581, 8805), (1761, 7905), (2635, 5283), (2935, 4743)]