20994948

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{397}}^1$

素因数の和:533

約数の個数: 72

約数和(自身を含む): 57803928

約数和(自身を除く): 36808980

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 113, 117, 156, 226, 234, 339, 397, 452, 468, 678, 794, 1017, 1191, 1356, 1469, 1588, 2034, 2382, 2938, 3573, 4068, 4407, 4764, 5161, 5876, 7146, 8814, 10322, 13221, 14292, 15483, 17628, 20644, 26442, 30966, 44861, 46449, 52884, 61932, 89722, 92898, 134583, 179444, 185796, 269166, 403749, 538332, 583193, 807498, 1166386, 1614996, 1749579, 2332772, 3499158, 5248737, 6998316, 10497474, 20994948]

約数ペア:

[(1, 20994948), (2, 10497474), (3, 6998316), (4, 5248737), (6, 3499158), (9, 2332772), (12, 1749579), (13, 1614996), (18, 1166386), (26, 807498), (36, 583193), (39, 538332), (52, 403749), (78, 269166), (113, 185796), (117, 179444), (156, 134583), (226, 92898), (234, 89722), (339, 61932), (397, 52884), (452, 46449), (468, 44861), (678, 30966), (794, 26442), (1017, 20644), (1191, 17628), (1356, 15483), (1469, 14292), (1588, 13221), (2034, 10322), (2382, 8814), (2938, 7146), (3573, 5876), (4068, 5161), (4407, 4764)]