28428760

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{431}}^1$

素因数の和:556

約数の個数: 64

約数和(自身を含む): 68584320

約数和(自身を除く): 40155560

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 97, 136, 170, 194, 340, 388, 431, 485, 680, 776, 862, 970, 1649, 1724, 1940, 2155, 3298, 3448, 3880, 4310, 6596, 7327, 8245, 8620, 13192, 14654, 16490, 17240, 29308, 32980, 36635, 41807, 58616, 65960, 73270, 83614, 146540, 167228, 209035, 293080, 334456, 418070, 710719, 836140, 1421438, 1672280, 2842876, 3553595, 5685752, 7107190, 14214380, 28428760]

約数ペア:

[(1, 28428760), (2, 14214380), (4, 7107190), (5, 5685752), (8, 3553595), (10, 2842876), (17, 1672280), (20, 1421438), (34, 836140), (40, 710719), (68, 418070), (85, 334456), (97, 293080), (136, 209035), (170, 167228), (194, 146540), (340, 83614), (388, 73270), (431, 65960), (485, 58616), (680, 41807), (776, 36635), (862, 32980), (970, 29308), (1649, 17240), (1724, 16490), (1940, 14654), (2155, 13192), (3298, 8620), (3448, 8245), (3880, 7327), (4310, 6596)]