21567850

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{311}}^1$

素因数の和:415

約数の個数: 48

約数和(自身を含む): 42943680

約数和(自身を除く): 21375830

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 73, 95, 146, 190, 311, 365, 475, 622, 730, 950, 1387, 1555, 1825, 2774, 3110, 3650, 5909, 6935, 7775, 11818, 13870, 15550, 22703, 29545, 34675, 45406, 59090, 69350, 113515, 147725, 227030, 295450, 431357, 567575, 862714, 1135150, 2156785, 4313570, 10783925, 21567850]

約数ペア:

[(1, 21567850), (2, 10783925), (5, 4313570), (10, 2156785), (19, 1135150), (25, 862714), (38, 567575), (50, 431357), (73, 295450), (95, 227030), (146, 147725), (190, 113515), (311, 69350), (365, 59090), (475, 45406), (622, 34675), (730, 29545), (950, 22703), (1387, 15550), (1555, 13870), (1825, 11818), (2774, 7775), (3110, 6935), (3650, 5909)]