21273945

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{163}}^1$

素因数の和:302

約数の個数: 64

約数和(自身を含む): 43075584

約数和(自身を除く): 21801639

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 113, 163, 165, 231, 339, 385, 489, 565, 791, 815, 1141, 1155, 1243, 1695, 1793, 2373, 2445, 3423, 3729, 3955, 5379, 5705, 6215, 8701, 8965, 11865, 12551, 17115, 18419, 18645, 26103, 26895, 37653, 43505, 55257, 62755, 92095, 128933, 130515, 188265, 202609, 276285, 386799, 607827, 644665, 1013045, 1418263, 1933995, 3039135, 4254789, 7091315, 21273945]

約数ペア:

[(1, 21273945), (3, 7091315), (5, 4254789), (7, 3039135), (11, 1933995), (15, 1418263), (21, 1013045), (33, 644665), (35, 607827), (55, 386799), (77, 276285), (105, 202609), (113, 188265), (163, 130515), (165, 128933), (231, 92095), (339, 62755), (385, 55257), (489, 43505), (565, 37653), (791, 26895), (815, 26103), (1141, 18645), (1155, 18419), (1243, 17115), (1695, 12551), (1793, 11865), (2373, 8965), (2445, 8701), (3423, 6215), (3729, 5705), (3955, 5379)]