20898784

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{929}}^1$

素因数の和:995

約数の個数: 48

約数和(自身を含む): 44528400

約数和(自身を除く): 23629616

約数列:

[1, 2, 4, 8, 16, 19, 32, 37, 38, 74, 76, 148, 152, 296, 304, 592, 608, 703, 929, 1184, 1406, 1858, 2812, 3716, 5624, 7432, 11248, 14864, 17651, 22496, 29728, 34373, 35302, 68746, 70604, 137492, 141208, 274984, 282416, 549968, 564832, 653087, 1099936, 1306174, 2612348, 5224696, 10449392, 20898784]

約数ペア:

[(1, 20898784), (2, 10449392), (4, 5224696), (8, 2612348), (16, 1306174), (19, 1099936), (32, 653087), (37, 564832), (38, 549968), (74, 282416), (76, 274984), (148, 141208), (152, 137492), (296, 70604), (304, 68746), (592, 35302), (608, 34373), (703, 29728), (929, 22496), (1184, 17651), (1406, 14864), (1858, 11248), (2812, 7432), (3716, 5624)]