20586356

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{641}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 43717632

約数和(自身を除く): 23131276

約数列:

[1, 2, 4, 7, 14, 28, 31, 37, 62, 74, 124, 148, 217, 259, 434, 518, 641, 868, 1036, 1147, 1282, 2294, 2564, 4487, 4588, 8029, 8974, 16058, 17948, 19871, 23717, 32116, 39742, 47434, 79484, 94868, 139097, 166019, 278194, 332038, 556388, 664076, 735227, 1470454, 2940908, 5146589, 10293178, 20586356]

約数ペア:

[(1, 20586356), (2, 10293178), (4, 5146589), (7, 2940908), (14, 1470454), (28, 735227), (31, 664076), (37, 556388), (62, 332038), (74, 278194), (124, 166019), (148, 139097), (217, 94868), (259, 79484), (434, 47434), (518, 39742), (641, 32116), (868, 23717), (1036, 19871), (1147, 17948), (1282, 16058), (2294, 8974), (2564, 8029), (4487, 4588)]