21000481208

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{161017}}^1$

素因数の和:161184

約数の個数: 64

約数和(自身を含む): 47996245440

約数和(自身を除く): 26995764232

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 68, 119, 136, 137, 238, 274, 476, 548, 952, 959, 1096, 1918, 2329, 3836, 4658, 7672, 9316, 16303, 18632, 32606, 65212, 130424, 161017, 322034, 644068, 1127119, 1288136, 2254238, 2737289, 4508476, 5474578, 9016952, 10949156, 19161023, 21898312, 22059329, 38322046, 44118658, 76644092, 88237316, 153288184, 154415303, 176474632, 308830606, 375008593, 617661212, 750017186, 1235322424, 1500034372, 2625060151, 3000068744, 5250120302, 10500240604, 21000481208]

約数ペア:

[(1, 21000481208), (2, 10500240604), (4, 5250120302), (7, 3000068744), (8, 2625060151), (14, 1500034372), (17, 1235322424), (28, 750017186), (34, 617661212), (56, 375008593), (68, 308830606), (119, 176474632), (136, 154415303), (137, 153288184), (238, 88237316), (274, 76644092), (476, 44118658), (548, 38322046), (952, 22059329), (959, 21898312), (1096, 19161023), (1918, 10949156), (2329, 9016952), (3836, 5474578), (4658, 4508476), (7672, 2737289), (9316, 2254238), (16303, 1288136), (18632, 1127119), (32606, 644068), (65212, 322034), (130424, 161017)]