21850276

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:209

約数の個数: 72

約数和(自身を含む): 48033216

約数和(自身を除く): 26182940

約数列:

[1, 2, 4, 7, 14, 23, 28, 37, 46, 49, 74, 92, 98, 131, 148, 161, 196, 259, 262, 322, 518, 524, 644, 851, 917, 1036, 1127, 1702, 1813, 1834, 2254, 3013, 3404, 3626, 3668, 4508, 4847, 5957, 6026, 6419, 7252, 9694, 11914, 12052, 12838, 19388, 21091, 23828, 25676, 33929, 41699, 42182, 67858, 83398, 84364, 111481, 135716, 147637, 166796, 222962, 237503, 295274, 445924, 475006, 590548, 780367, 950012, 1560734, 3121468, 5462569, 10925138, 21850276]

約数ペア:

[(1, 21850276), (2, 10925138), (4, 5462569), (7, 3121468), (14, 1560734), (23, 950012), (28, 780367), (37, 590548), (46, 475006), (49, 445924), (74, 295274), (92, 237503), (98, 222962), (131, 166796), (148, 147637), (161, 135716), (196, 111481), (259, 84364), (262, 83398), (322, 67858), (518, 42182), (524, 41699), (644, 33929), (851, 25676), (917, 23828), (1036, 21091), (1127, 19388), (1702, 12838), (1813, 12052), (1834, 11914), (2254, 9694), (3013, 7252), (3404, 6419), (3626, 6026), (3668, 5957), (4508, 4847)]