21318430

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{313}}^1$

素因数の和:473

約数の個数: 48

約数和(自身を含む): 45102960

約数和(自身を除く): 23784530

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 139, 245, 278, 313, 490, 626, 695, 973, 1390, 1565, 1946, 2191, 3130, 4382, 4865, 6811, 9730, 10955, 13622, 15337, 21910, 30674, 34055, 43507, 68110, 76685, 87014, 153370, 217535, 304549, 435070, 609098, 1522745, 2131843, 3045490, 4263686, 10659215, 21318430]

約数ペア:

[(1, 21318430), (2, 10659215), (5, 4263686), (7, 3045490), (10, 2131843), (14, 1522745), (35, 609098), (49, 435070), (70, 304549), (98, 217535), (139, 153370), (245, 87014), (278, 76685), (313, 68110), (490, 43507), (626, 34055), (695, 30674), (973, 21910), (1390, 15337), (1565, 13622), (1946, 10955), (2191, 9730), (3130, 6811), (4382, 4865)]