21764860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{863}}^1$

素因数の和:982

約数の個数: 48

約数和(自身を含む): 49787136

約数和(自身を除く): 28022276

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 97, 130, 194, 260, 388, 485, 863, 970, 1261, 1726, 1940, 2522, 3452, 4315, 5044, 6305, 8630, 11219, 12610, 17260, 22438, 25220, 44876, 56095, 83711, 112190, 167422, 224380, 334844, 418555, 837110, 1088243, 1674220, 2176486, 4352972, 5441215, 10882430, 21764860]

約数ペア:

[(1, 21764860), (2, 10882430), (4, 5441215), (5, 4352972), (10, 2176486), (13, 1674220), (20, 1088243), (26, 837110), (52, 418555), (65, 334844), (97, 224380), (130, 167422), (194, 112190), (260, 83711), (388, 56095), (485, 44876), (863, 25220), (970, 22438), (1261, 17260), (1726, 12610), (1940, 11219), (2522, 8630), (3452, 6305), (4315, 5044)]