20992644

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{653}}^1$

素因数の和:729

約数の個数: 72

約数和(自身を含む): 57133440

約数和(自身を除く): 36140796

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 47, 57, 76, 94, 114, 141, 171, 188, 228, 282, 342, 423, 564, 653, 684, 846, 893, 1306, 1692, 1786, 1959, 2612, 2679, 3572, 3918, 5358, 5877, 7836, 8037, 10716, 11754, 12407, 16074, 23508, 24814, 30691, 32148, 37221, 49628, 61382, 74442, 92073, 111663, 122764, 148884, 184146, 223326, 276219, 368292, 446652, 552438, 583129, 1104876, 1166258, 1749387, 2332516, 3498774, 5248161, 6997548, 10496322, 20992644]

約数ペア:

[(1, 20992644), (2, 10496322), (3, 6997548), (4, 5248161), (6, 3498774), (9, 2332516), (12, 1749387), (18, 1166258), (19, 1104876), (36, 583129), (38, 552438), (47, 446652), (57, 368292), (76, 276219), (94, 223326), (114, 184146), (141, 148884), (171, 122764), (188, 111663), (228, 92073), (282, 74442), (342, 61382), (423, 49628), (564, 37221), (653, 32148), (684, 30691), (846, 24814), (893, 23508), (1306, 16074), (1692, 12407), (1786, 11754), (1959, 10716), (2612, 8037), (2679, 7836), (3572, 5877), (3918, 5358)]