20394465

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{223}}^1$

素因数の和:318

約数の個数: 64

約数和(自身を含む): 40943616

約数和(自身を除く): 20549151

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 67, 91, 105, 195, 201, 223, 273, 335, 455, 469, 669, 871, 1005, 1115, 1365, 1407, 1561, 2345, 2613, 2899, 3345, 4355, 4683, 6097, 7035, 7805, 8697, 13065, 14495, 14941, 18291, 20293, 23415, 30485, 43485, 44823, 60879, 74705, 91455, 101465, 104587, 194233, 224115, 304395, 313761, 522935, 582699, 971165, 1359631, 1568805, 2913495, 4078893, 6798155, 20394465]

約数ペア:

[(1, 20394465), (3, 6798155), (5, 4078893), (7, 2913495), (13, 1568805), (15, 1359631), (21, 971165), (35, 582699), (39, 522935), (65, 313761), (67, 304395), (91, 224115), (105, 194233), (195, 104587), (201, 101465), (223, 91455), (273, 74705), (335, 60879), (455, 44823), (469, 43485), (669, 30485), (871, 23415), (1005, 20293), (1115, 18291), (1365, 14941), (1407, 14495), (1561, 13065), (2345, 8697), (2613, 7805), (2899, 7035), (3345, 6097), (4355, 4683)]