21228564

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{457}}^1$

素因数の和:557

約数の個数: 72

約数和(自身を含む): 58477440

約数和(自身を除く): 37248876

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 79, 84, 98, 147, 158, 196, 237, 294, 316, 457, 474, 553, 588, 914, 948, 1106, 1371, 1659, 1828, 2212, 2742, 3199, 3318, 3871, 5484, 6398, 6636, 7742, 9597, 11613, 12796, 15484, 19194, 22393, 23226, 36103, 38388, 44786, 46452, 67179, 72206, 89572, 108309, 134358, 144412, 216618, 252721, 268716, 433236, 505442, 758163, 1010884, 1516326, 1769047, 3032652, 3538094, 5307141, 7076188, 10614282, 21228564]

約数ペア:

[(1, 21228564), (2, 10614282), (3, 7076188), (4, 5307141), (6, 3538094), (7, 3032652), (12, 1769047), (14, 1516326), (21, 1010884), (28, 758163), (42, 505442), (49, 433236), (79, 268716), (84, 252721), (98, 216618), (147, 144412), (158, 134358), (196, 108309), (237, 89572), (294, 72206), (316, 67179), (457, 46452), (474, 44786), (553, 38388), (588, 36103), (914, 23226), (948, 22393), (1106, 19194), (1371, 15484), (1659, 12796), (1828, 11613), (2212, 9597), (2742, 7742), (3199, 6636), (3318, 6398), (3871, 5484)]