20856966

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{307}}^1$

素因数の和:405

約数の個数: 48

約数和(自身を含む): 45993024

約数和(自身を除く): 25136058

約数列:

[1, 2, 3, 6, 13, 26, 39, 67, 78, 134, 169, 201, 307, 338, 402, 507, 614, 871, 921, 1014, 1742, 1842, 2613, 3991, 5226, 7982, 11323, 11973, 20569, 22646, 23946, 33969, 41138, 51883, 61707, 67938, 103766, 123414, 155649, 267397, 311298, 534794, 802191, 1604382, 3476161, 6952322, 10428483, 20856966]

約数ペア:

[(1, 20856966), (2, 10428483), (3, 6952322), (6, 3476161), (13, 1604382), (26, 802191), (39, 534794), (67, 311298), (78, 267397), (134, 155649), (169, 123414), (201, 103766), (307, 67938), (338, 61707), (402, 51883), (507, 41138), (614, 33969), (871, 23946), (921, 22646), (1014, 20569), (1742, 11973), (1842, 11323), (2613, 7982), (3991, 5226)]