20890484

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 40642560

約数和(自身を除く): 19752076

約数列:

[1, 2, 4, 17, 34, 41, 59, 68, 82, 118, 127, 164, 236, 254, 508, 697, 1003, 1394, 2006, 2159, 2419, 2788, 4012, 4318, 4838, 5207, 7493, 8636, 9676, 10414, 14986, 20828, 29972, 41123, 82246, 88519, 127381, 164492, 177038, 254762, 307213, 354076, 509524, 614426, 1228852, 5222621, 10445242, 20890484]

約数ペア:

[(1, 20890484), (2, 10445242), (4, 5222621), (17, 1228852), (34, 614426), (41, 509524), (59, 354076), (68, 307213), (82, 254762), (118, 177038), (127, 164492), (164, 127381), (236, 88519), (254, 82246), (508, 41123), (697, 29972), (1003, 20828), (1394, 14986), (2006, 10414), (2159, 9676), (2419, 8636), (2788, 7493), (4012, 5207), (4318, 4838)]