21130140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{4243}}^1$

素因数の和:4338

約数の個数: 48

約数和(自身を含む): 59891328

約数和(自身を除く): 38761188

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 83, 166, 249, 332, 415, 498, 830, 996, 1245, 1660, 2490, 4243, 4980, 8486, 12729, 16972, 21215, 25458, 42430, 50916, 63645, 84860, 127290, 254580, 352169, 704338, 1056507, 1408676, 1760845, 2113014, 3521690, 4226028, 5282535, 7043380, 10565070, 21130140]

約数ペア:

[(1, 21130140), (2, 10565070), (3, 7043380), (4, 5282535), (5, 4226028), (6, 3521690), (10, 2113014), (12, 1760845), (15, 1408676), (20, 1056507), (30, 704338), (60, 352169), (83, 254580), (166, 127290), (249, 84860), (332, 63645), (415, 50916), (498, 42430), (830, 25458), (996, 21215), (1245, 16972), (1660, 12729), (2490, 8486), (4243, 4980)]