20996656996

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{811}}^1\times {\mathrm{4261}}^1$

素因数の和:5121

約数の個数: 72

約数和(自身を含む): 44186779392

約数和(自身を除く): 23190122396

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 62, 98, 124, 196, 217, 434, 811, 868, 1519, 1622, 3038, 3244, 4261, 5677, 6076, 8522, 11354, 17044, 22708, 25141, 29827, 39739, 50282, 59654, 79478, 100564, 119308, 132091, 158956, 175987, 208789, 264182, 351974, 417578, 528364, 703948, 835156, 924637, 1231909, 1849274, 2463818, 3455671, 3698548, 4927636, 6472459, 6911342, 12944918, 13822684, 24189697, 25889836, 48379394, 96758788, 107125801, 169327879, 214251602, 338655758, 428503204, 677311516, 749880607, 1499761214, 2999522428, 5249164249, 10498328498, 20996656996]

約数ペア:

[(1, 20996656996), (2, 10498328498), (4, 5249164249), (7, 2999522428), (14, 1499761214), (28, 749880607), (31, 677311516), (49, 428503204), (62, 338655758), (98, 214251602), (124, 169327879), (196, 107125801), (217, 96758788), (434, 48379394), (811, 25889836), (868, 24189697), (1519, 13822684), (1622, 12944918), (3038, 6911342), (3244, 6472459), (4261, 4927636), (5677, 3698548), (6076, 3455671), (8522, 2463818), (11354, 1849274), (17044, 1231909), (22708, 924637), (25141, 835156), (29827, 703948), (39739, 528364), (50282, 417578), (59654, 351974), (79478, 264182), (100564, 208789), (119308, 175987), (132091, 158956)]