21029600

素因数分解:

$2^5\times 5^2\times {\mathrm{97}}^1\times {\mathrm{271}}^1$

素因数の和:388

約数の個数: 72

約数和(自身を含む): 52059168

約数和(自身を除く): 31029568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 97, 100, 160, 194, 200, 271, 388, 400, 485, 542, 776, 800, 970, 1084, 1355, 1552, 1940, 2168, 2425, 2710, 3104, 3880, 4336, 4850, 5420, 6775, 7760, 8672, 9700, 10840, 13550, 15520, 19400, 21680, 26287, 27100, 38800, 43360, 52574, 54200, 77600, 105148, 108400, 131435, 210296, 216800, 262870, 420592, 525740, 657175, 841184, 1051480, 1314350, 2102960, 2628700, 4205920, 5257400, 10514800, 21029600]

約数ペア:

[(1, 21029600), (2, 10514800), (4, 5257400), (5, 4205920), (8, 2628700), (10, 2102960), (16, 1314350), (20, 1051480), (25, 841184), (32, 657175), (40, 525740), (50, 420592), (80, 262870), (97, 216800), (100, 210296), (160, 131435), (194, 108400), (200, 105148), (271, 77600), (388, 54200), (400, 52574), (485, 43360), (542, 38800), (776, 27100), (800, 26287), (970, 21680), (1084, 19400), (1355, 15520), (1552, 13550), (1940, 10840), (2168, 9700), (2425, 8672), (2710, 7760), (3104, 6775), (3880, 5420), (4336, 4850)]