21971440

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{11941}}^1$

素因数の和:11977

約数の個数: 40

約数和(自身を含む): 53309088

約数和(自身を除く): 31337648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 11941, 23882, 47764, 59705, 95528, 119410, 191056, 238820, 274643, 477640, 549286, 955280, 1098572, 1373215, 2197144, 2746430, 4394288, 5492860, 10985720, 21971440]

約数ペア:

[(1, 21971440), (2, 10985720), (4, 5492860), (5, 4394288), (8, 2746430), (10, 2197144), (16, 1373215), (20, 1098572), (23, 955280), (40, 549286), (46, 477640), (80, 274643), (92, 238820), (115, 191056), (184, 119410), (230, 95528), (368, 59705), (460, 47764), (920, 23882), (1840, 11941)]