20285388

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{631}}^1$

素因数の和:707

約数の個数: 72

約数和(自身を含む): 55211520

約数和(自身を除く): 34926132

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, 631, 684, 846, 893, 1262, 1692, 1786, 1893, 2524, 2679, 3572, 3786, 5358, 5679, 7572, 8037, 10716, 11358, 11989, 16074, 22716, 23978, 29657, 32148, 35967, 47956, 59314, 71934, 88971, 107901, 118628, 143868, 177942, 215802, 266913, 355884, 431604, 533826, 563483, 1067652, 1126966, 1690449, 2253932, 3380898, 5071347, 6761796, 10142694, 20285388]

約数ペア:

[(1, 20285388), (2, 10142694), (3, 6761796), (4, 5071347), (6, 3380898), (9, 2253932), (12, 1690449), (18, 1126966), (19, 1067652), (36, 563483), (38, 533826), (47, 431604), (57, 355884), (76, 266913), (94, 215802), (114, 177942), (141, 143868), (171, 118628), (188, 107901), (228, 88971), (282, 71934), (342, 59314), (423, 47956), (564, 35967), (631, 32148), (684, 29657), (846, 23978), (893, 22716), (1262, 16074), (1692, 11989), (1786, 11358), (1893, 10716), (2524, 8037), (2679, 7572), (3572, 5679), (3786, 5358)]