19943584

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{601}}^1$

素因数の和:689

約数の個数: 48

約数和(自身を含む): 42325416

約数和(自身を除く): 22381832

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 61, 68, 122, 136, 244, 272, 488, 544, 601, 976, 1037, 1202, 1952, 2074, 2404, 4148, 4808, 8296, 9616, 10217, 16592, 19232, 20434, 33184, 36661, 40868, 73322, 81736, 146644, 163472, 293288, 326944, 586576, 623237, 1173152, 1246474, 2492948, 4985896, 9971792, 19943584]

約数ペア:

[(1, 19943584), (2, 9971792), (4, 4985896), (8, 2492948), (16, 1246474), (17, 1173152), (32, 623237), (34, 586576), (61, 326944), (68, 293288), (122, 163472), (136, 146644), (244, 81736), (272, 73322), (488, 40868), (544, 36661), (601, 33184), (976, 20434), (1037, 19232), (1202, 16592), (1952, 10217), (2074, 9616), (2404, 8296), (4148, 4808)]