20992972

素因数分解:

$2^2\times 7^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1$

素因数の和:156

約数の個数: 96

約数和(自身を含む): 50803200

約数和(自身を除く): 29810228

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 49, 52, 77, 91, 98, 107, 143, 154, 182, 196, 214, 286, 308, 343, 364, 428, 539, 572, 637, 686, 749, 1001, 1078, 1177, 1274, 1372, 1391, 1498, 2002, 2156, 2354, 2548, 2782, 2996, 3773, 4004, 4459, 4708, 5243, 5564, 7007, 7546, 8239, 8918, 9737, 10486, 14014, 15092, 15301, 16478, 17836, 19474, 20972, 28028, 30602, 32956, 36701, 38948, 49049, 57673, 61204, 68159, 73402, 98098, 107107, 115346, 136318, 146804, 196196, 214214, 230692, 272636, 403711, 428428, 477113, 749749, 807422, 954226, 1499498, 1614844, 1908452, 2998996, 5248243, 10496486, 20992972]

約数ペア:

[(1, 20992972), (2, 10496486), (4, 5248243), (7, 2998996), (11, 1908452), (13, 1614844), (14, 1499498), (22, 954226), (26, 807422), (28, 749749), (44, 477113), (49, 428428), (52, 403711), (77, 272636), (91, 230692), (98, 214214), (107, 196196), (143, 146804), (154, 136318), (182, 115346), (196, 107107), (214, 98098), (286, 73402), (308, 68159), (343, 61204), (364, 57673), (428, 49049), (539, 38948), (572, 36701), (637, 32956), (686, 30602), (749, 28028), (1001, 20972), (1078, 19474), (1177, 17836), (1274, 16478), (1372, 15301), (1391, 15092), (1498, 14014), (2002, 10486), (2156, 9737), (2354, 8918), (2548, 8239), (2782, 7546), (2996, 7007), (3773, 5564), (4004, 5243), (4459, 4708)]