21893110

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1447}}^1$

素因数の和:1560

約数の個数: 32

約数和(自身を含む): 42223680

約数和(自身を除く): 20330570

約数列:

[1, 2, 5, 10, 17, 34, 85, 89, 170, 178, 445, 890, 1447, 1513, 2894, 3026, 7235, 7565, 14470, 15130, 24599, 49198, 122995, 128783, 245990, 257566, 643915, 1287830, 2189311, 4378622, 10946555, 21893110]

約数ペア:

[(1, 21893110), (2, 10946555), (5, 4378622), (10, 2189311), (17, 1287830), (34, 643915), (85, 257566), (89, 245990), (170, 128783), (178, 122995), (445, 49198), (890, 24599), (1447, 15130), (1513, 14470), (2894, 7565), (3026, 7235)]