20155428

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{373}}^1$

素因数の和:481

約数の個数: 72

約数和(自身を含む): 54454400

約数和(自身を除く): 34298972

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 79, 114, 158, 171, 228, 237, 316, 342, 373, 474, 684, 711, 746, 948, 1119, 1422, 1492, 1501, 2238, 2844, 3002, 3357, 4476, 4503, 6004, 6714, 7087, 9006, 13428, 13509, 14174, 18012, 21261, 27018, 28348, 29467, 42522, 54036, 58934, 63783, 85044, 88401, 117868, 127566, 176802, 255132, 265203, 353604, 530406, 559873, 1060812, 1119746, 1679619, 2239492, 3359238, 5038857, 6718476, 10077714, 20155428]

約数ペア:

[(1, 20155428), (2, 10077714), (3, 6718476), (4, 5038857), (6, 3359238), (9, 2239492), (12, 1679619), (18, 1119746), (19, 1060812), (36, 559873), (38, 530406), (57, 353604), (76, 265203), (79, 255132), (114, 176802), (158, 127566), (171, 117868), (228, 88401), (237, 85044), (316, 63783), (342, 58934), (373, 54036), (474, 42522), (684, 29467), (711, 28348), (746, 27018), (948, 21261), (1119, 18012), (1422, 14174), (1492, 13509), (1501, 13428), (2238, 9006), (2844, 7087), (3002, 6714), (3357, 6004), (4476, 4503)]