20923370

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1$

素因数の和:279

約数の個数: 64

約数和(自身を含む): 43908480

約数和(自身を除く): 22985110

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 43, 65, 86, 95, 130, 190, 197, 215, 247, 394, 430, 494, 559, 817, 985, 1118, 1235, 1634, 1970, 2470, 2561, 2795, 3743, 4085, 5122, 5590, 7486, 8170, 8471, 10621, 12805, 16942, 18715, 21242, 25610, 37430, 42355, 48659, 53105, 84710, 97318, 106210, 110123, 160949, 220246, 243295, 321898, 486590, 550615, 804745, 1101230, 1609490, 2092337, 4184674, 10461685, 20923370]

約数ペア:

[(1, 20923370), (2, 10461685), (5, 4184674), (10, 2092337), (13, 1609490), (19, 1101230), (26, 804745), (38, 550615), (43, 486590), (65, 321898), (86, 243295), (95, 220246), (130, 160949), (190, 110123), (197, 106210), (215, 97318), (247, 84710), (394, 53105), (430, 48659), (494, 42355), (559, 37430), (817, 25610), (985, 21242), (1118, 18715), (1235, 16942), (1634, 12805), (1970, 10621), (2470, 8471), (2561, 8170), (2795, 7486), (3743, 5590), (4085, 5122)]