21383428

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 42997248

約数和(自身を除く): 21613820

約数列:

[1, 2, 4, 11, 22, 31, 44, 61, 62, 122, 124, 244, 257, 341, 514, 671, 682, 1028, 1342, 1364, 1891, 2684, 2827, 3782, 5654, 7564, 7967, 11308, 15677, 15934, 20801, 31354, 31868, 41602, 62708, 83204, 87637, 172447, 175274, 344894, 350548, 485987, 689788, 971974, 1943948, 5345857, 10691714, 21383428]

約数ペア:

[(1, 21383428), (2, 10691714), (4, 5345857), (11, 1943948), (22, 971974), (31, 689788), (44, 485987), (61, 350548), (62, 344894), (122, 175274), (124, 172447), (244, 87637), (257, 83204), (341, 62708), (514, 41602), (671, 31868), (682, 31354), (1028, 20801), (1342, 15934), (1364, 15677), (1891, 11308), (2684, 7967), (2827, 7564), (3782, 5654)]