21025450

素因数分解:

$2^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1$

素因数の和:471

約数の個数: 48

約数和(自身を含む): 41783040

約数和(自身を除く): 20757590

約数列:

[1, 2, 5, 10, 23, 25, 46, 47, 50, 94, 115, 230, 235, 389, 470, 575, 778, 1081, 1150, 1175, 1945, 2162, 2350, 3890, 5405, 8947, 9725, 10810, 17894, 18283, 19450, 27025, 36566, 44735, 54050, 89470, 91415, 182830, 223675, 420509, 447350, 457075, 841018, 914150, 2102545, 4205090, 10512725, 21025450]

約数ペア:

[(1, 21025450), (2, 10512725), (5, 4205090), (10, 2102545), (23, 914150), (25, 841018), (46, 457075), (47, 447350), (50, 420509), (94, 223675), (115, 182830), (230, 91415), (235, 89470), (389, 54050), (470, 44735), (575, 36566), (778, 27025), (1081, 19450), (1150, 18283), (1175, 17894), (1945, 10810), (2162, 9725), (2350, 8947), (3890, 5405)]