21093055960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{895291}}^1$

素因数の和:895352

約数の個数: 64

約数和(自身を含む): 51568819200

約数和(自身を除く): 30475763240

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 31, 38, 40, 62, 76, 95, 124, 152, 155, 190, 248, 310, 380, 589, 620, 760, 1178, 1240, 2356, 2945, 4712, 5890, 11780, 23560, 895291, 1790582, 3581164, 4476455, 7162328, 8952910, 17010529, 17905820, 27754021, 34021058, 35811640, 55508042, 68042116, 85052645, 111016084, 136084232, 138770105, 170105290, 222032168, 277540210, 340210580, 527326399, 555080420, 680421160, 1054652798, 1110160840, 2109305596, 2636631995, 4218611192, 5273263990, 10546527980, 21093055960]

約数ペア:

[(1, 21093055960), (2, 10546527980), (4, 5273263990), (5, 4218611192), (8, 2636631995), (10, 2109305596), (19, 1110160840), (20, 1054652798), (31, 680421160), (38, 555080420), (40, 527326399), (62, 340210580), (76, 277540210), (95, 222032168), (124, 170105290), (152, 138770105), (155, 136084232), (190, 111016084), (248, 85052645), (310, 68042116), (380, 55508042), (589, 35811640), (620, 34021058), (760, 27754021), (1178, 17905820), (1240, 17010529), (2356, 8952910), (2945, 7162328), (4712, 4476455), (5890, 3581164), (11780, 1790582), (23560, 895291)]