19921984

素因数分解:

$2^6\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{179}}^1$

素因数の和:275

約数の個数: 56

約数和(自身を含む): 41696640

約数和(自身を除く): 21774656

約数列:

[1, 2, 4, 8, 16, 32, 37, 47, 64, 74, 94, 148, 179, 188, 296, 358, 376, 592, 716, 752, 1184, 1432, 1504, 1739, 2368, 2864, 3008, 3478, 5728, 6623, 6956, 8413, 11456, 13246, 13912, 16826, 26492, 27824, 33652, 52984, 55648, 67304, 105968, 111296, 134608, 211936, 269216, 311281, 423872, 538432, 622562, 1245124, 2490248, 4980496, 9960992, 19921984]

約数ペア:

[(1, 19921984), (2, 9960992), (4, 4980496), (8, 2490248), (16, 1245124), (32, 622562), (37, 538432), (47, 423872), (64, 311281), (74, 269216), (94, 211936), (148, 134608), (179, 111296), (188, 105968), (296, 67304), (358, 55648), (376, 52984), (592, 33652), (716, 27824), (752, 26492), (1184, 16826), (1432, 13912), (1504, 13246), (1739, 11456), (2368, 8413), (2864, 6956), (3008, 6623), (3478, 5728)]