21538592

素因数分解:

$2^5\times {\mathrm{17}}^3\times {\mathrm{137}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 45382680

約数和(自身を除く): 23844088

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 136, 137, 272, 274, 289, 544, 548, 578, 1096, 1156, 2192, 2312, 2329, 4384, 4624, 4658, 4913, 9248, 9316, 9826, 18632, 19652, 37264, 39304, 39593, 74528, 78608, 79186, 157216, 158372, 316744, 633488, 673081, 1266976, 1346162, 2692324, 5384648, 10769296, 21538592]

約数ペア:

[(1, 21538592), (2, 10769296), (4, 5384648), (8, 2692324), (16, 1346162), (17, 1266976), (32, 673081), (34, 633488), (68, 316744), (136, 158372), (137, 157216), (272, 79186), (274, 78608), (289, 74528), (544, 39593), (548, 39304), (578, 37264), (1096, 19652), (1156, 18632), (2192, 9826), (2312, 9316), (2329, 9248), (4384, 4913), (4624, 4658)]