21000514872

素因数分解:

$2^3\times 3^1\times {\mathrm{23}}^1\times {\mathrm{2521}}^1\times {\mathrm{15091}}^1$

素因数の和:17644

約数の個数: 64

約数和(自身を含む): 54809314560

約数和(自身を除く): 33808799688

約数列:

[1, 2, 3, 4, 6, 8, 12, 23, 24, 46, 69, 92, 138, 184, 276, 552, 2521, 5042, 7563, 10084, 15091, 15126, 20168, 30182, 30252, 45273, 57983, 60364, 60504, 90546, 115966, 120728, 173949, 181092, 231932, 347093, 347898, 362184, 463864, 694186, 695796, 1041279, 1388372, 1391592, 2082558, 2776744, 4165116, 8330232, 38044411, 76088822, 114133233, 152177644, 228266466, 304355288, 456532932, 875021453, 913065864, 1750042906, 2625064359, 3500085812, 5250128718, 7000171624, 10500257436, 21000514872]

約数ペア:

[(1, 21000514872), (2, 10500257436), (3, 7000171624), (4, 5250128718), (6, 3500085812), (8, 2625064359), (12, 1750042906), (23, 913065864), (24, 875021453), (46, 456532932), (69, 304355288), (92, 228266466), (138, 152177644), (184, 114133233), (276, 76088822), (552, 38044411), (2521, 8330232), (5042, 4165116), (7563, 2776744), (10084, 2082558), (15091, 1391592), (15126, 1388372), (20168, 1041279), (30182, 695796), (30252, 694186), (45273, 463864), (57983, 362184), (60364, 347898), (60504, 347093), (90546, 231932), (115966, 181092), (120728, 173949)]