20419100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1$

素因数の和:279

約数の個数: 72

約数和(自身を含む): 48486480

約数和(自身を除く): 28067380

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 113, 130, 139, 226, 260, 278, 325, 452, 556, 565, 650, 695, 1130, 1300, 1390, 1469, 1807, 2260, 2780, 2825, 2938, 3475, 3614, 5650, 5876, 6950, 7228, 7345, 9035, 11300, 13900, 14690, 15707, 18070, 29380, 31414, 36140, 36725, 45175, 62828, 73450, 78535, 90350, 146900, 157070, 180700, 204191, 314140, 392675, 408382, 785350, 816764, 1020955, 1570700, 2041910, 4083820, 5104775, 10209550, 20419100]

約数ペア:

[(1, 20419100), (2, 10209550), (4, 5104775), (5, 4083820), (10, 2041910), (13, 1570700), (20, 1020955), (25, 816764), (26, 785350), (50, 408382), (52, 392675), (65, 314140), (100, 204191), (113, 180700), (130, 157070), (139, 146900), (226, 90350), (260, 78535), (278, 73450), (325, 62828), (452, 45175), (556, 36725), (565, 36140), (650, 31414), (695, 29380), (1130, 18070), (1300, 15707), (1390, 14690), (1469, 13900), (1807, 11300), (2260, 9035), (2780, 7345), (2825, 7228), (2938, 6950), (3475, 5876), (3614, 5650)]