212355220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19699}}^1$

素因数の和:19733

約数の個数: 72

約数和(自身を含む): 565941600

約数和(自身を除く): 353586380

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 980, 1078, 1540, 2156, 2695, 5390, 10780, 19699, 39398, 78796, 98495, 137893, 196990, 216689, 275786, 393980, 433378, 551572, 689465, 866756, 965251, 1083445, 1378930, 1516823, 1930502, 2166890, 2757860, 3033646, 3861004, 4333780, 4826255, 6067292, 7584115, 9652510, 10617761, 15168230, 19305020, 21235522, 30336460, 42471044, 53088805, 106177610, 212355220]

約数ペア:

[(1, 212355220), (2, 106177610), (4, 53088805), (5, 42471044), (7, 30336460), (10, 21235522), (11, 19305020), (14, 15168230), (20, 10617761), (22, 9652510), (28, 7584115), (35, 6067292), (44, 4826255), (49, 4333780), (55, 3861004), (70, 3033646), (77, 2757860), (98, 2166890), (110, 1930502), (140, 1516823), (154, 1378930), (196, 1083445), (220, 965251), (245, 866756), (308, 689465), (385, 551572), (490, 433378), (539, 393980), (770, 275786), (980, 216689), (1078, 196990), (1540, 137893), (2156, 98495), (2695, 78796), (5390, 39398), (10780, 19699)]