19856864

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{541}}^1$

素因数の和:619

約数の個数: 48

約数和(自身を含む): 41521536

約数和(自身を除く): 21664672

約数列:

[1, 2, 4, 8, 16, 31, 32, 37, 62, 74, 124, 148, 248, 296, 496, 541, 592, 992, 1082, 1147, 1184, 2164, 2294, 4328, 4588, 8656, 9176, 16771, 17312, 18352, 20017, 33542, 36704, 40034, 67084, 80068, 134168, 160136, 268336, 320272, 536672, 620527, 640544, 1241054, 2482108, 4964216, 9928432, 19856864]

約数ペア:

[(1, 19856864), (2, 9928432), (4, 4964216), (8, 2482108), (16, 1241054), (31, 640544), (32, 620527), (37, 536672), (62, 320272), (74, 268336), (124, 160136), (148, 134168), (248, 80068), (296, 67084), (496, 40034), (541, 36704), (592, 33542), (992, 20017), (1082, 18352), (1147, 17312), (1184, 16771), (2164, 9176), (2294, 8656), (4328, 4588)]