20365725

素因数分解:

$3^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 35622720

約数和(自身を除く): 15256995

約数列:

[1, 3, 5, 15, 25, 37, 41, 75, 111, 123, 179, 185, 205, 537, 555, 615, 895, 925, 1025, 1517, 2685, 2775, 3075, 4475, 4551, 6623, 7339, 7585, 13425, 19869, 22017, 22755, 33115, 36695, 37925, 99345, 110085, 113775, 165575, 183475, 271543, 496725, 550425, 814629, 1357715, 4073145, 6788575, 20365725]

約数ペア:

[(1, 20365725), (3, 6788575), (5, 4073145), (15, 1357715), (25, 814629), (37, 550425), (41, 496725), (75, 271543), (111, 183475), (123, 165575), (179, 113775), (185, 110085), (205, 99345), (537, 37925), (555, 36695), (615, 33115), (895, 22755), (925, 22017), (1025, 19869), (1517, 13425), (2685, 7585), (2775, 7339), (3075, 6623), (4475, 4551)]