21000751220

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{409}}^1\times {\mathrm{111623}}^1$

素因数の和:112064

約数の個数: 48

約数和(自身を含む): 46131966720

約数和(自身を除く): 25131215500

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 409, 460, 818, 1636, 2045, 4090, 8180, 9407, 18814, 37628, 47035, 94070, 111623, 188140, 223246, 446492, 558115, 1116230, 2232460, 2567329, 5134658, 10269316, 12836645, 25673290, 45653807, 51346580, 91307614, 182615228, 228269035, 456538070, 913076140, 1050037561, 2100075122, 4200150244, 5250187805, 10500375610, 21000751220]

約数ペア:

[(1, 21000751220), (2, 10500375610), (4, 5250187805), (5, 4200150244), (10, 2100075122), (20, 1050037561), (23, 913076140), (46, 456538070), (92, 228269035), (115, 182615228), (230, 91307614), (409, 51346580), (460, 45653807), (818, 25673290), (1636, 12836645), (2045, 10269316), (4090, 5134658), (8180, 2567329), (9407, 2232460), (18814, 1116230), (37628, 558115), (47035, 446492), (94070, 223246), (111623, 188140)]