21978592

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{977}}^1$

素因数の和:1043

約数の個数: 48

約数和(自身を含む): 46826640

約数和(自身を除く): 24848048

約数列:

[1, 2, 4, 8, 16, 19, 32, 37, 38, 74, 76, 148, 152, 296, 304, 592, 608, 703, 977, 1184, 1406, 1954, 2812, 3908, 5624, 7816, 11248, 15632, 18563, 22496, 31264, 36149, 37126, 72298, 74252, 144596, 148504, 289192, 297008, 578384, 594016, 686831, 1156768, 1373662, 2747324, 5494648, 10989296, 21978592]

約数ペア:

[(1, 21978592), (2, 10989296), (4, 5494648), (8, 2747324), (16, 1373662), (19, 1156768), (32, 686831), (37, 594016), (38, 578384), (74, 297008), (76, 289192), (148, 148504), (152, 144596), (296, 74252), (304, 72298), (592, 37126), (608, 36149), (703, 31264), (977, 22496), (1184, 18563), (1406, 15632), (1954, 11248), (2812, 7816), (3908, 5624)]