21406996

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{461}}^1$

素因数の和:544

約数の個数: 48

約数和(自身を含む): 43464960

約数和(自身を除く): 22057964

約数列:

[1, 2, 4, 13, 19, 26, 38, 47, 52, 76, 94, 188, 247, 461, 494, 611, 893, 922, 988, 1222, 1786, 1844, 2444, 3572, 5993, 8759, 11609, 11986, 17518, 21667, 23218, 23972, 35036, 43334, 46436, 86668, 113867, 227734, 281671, 411673, 455468, 563342, 823346, 1126684, 1646692, 5351749, 10703498, 21406996]

約数ペア:

[(1, 21406996), (2, 10703498), (4, 5351749), (13, 1646692), (19, 1126684), (26, 823346), (38, 563342), (47, 455468), (52, 411673), (76, 281671), (94, 227734), (188, 113867), (247, 86668), (461, 46436), (494, 43334), (611, 35036), (893, 23972), (922, 23218), (988, 21667), (1222, 17518), (1786, 11986), (1844, 11609), (2444, 8759), (3572, 5993)]