21432891220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8501}}^1\times {\mathrm{9697}}^1$

素因数の和:18220

約数の個数: 48

約数和(自身を含む): 48482008848

約数和(自身を除く): 27049117628

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 8501, 9697, 17002, 19394, 34004, 38788, 42505, 48485, 85010, 96970, 110513, 126061, 170020, 193940, 221026, 252122, 442052, 504244, 552565, 630305, 1105130, 1260610, 2210260, 2521220, 82434197, 164868394, 329736788, 412170985, 824341970, 1071644561, 1648683940, 2143289122, 4286578244, 5358222805, 10716445610, 21432891220]

約数ペア:

[(1, 21432891220), (2, 10716445610), (4, 5358222805), (5, 4286578244), (10, 2143289122), (13, 1648683940), (20, 1071644561), (26, 824341970), (52, 412170985), (65, 329736788), (130, 164868394), (260, 82434197), (8501, 2521220), (9697, 2210260), (17002, 1260610), (19394, 1105130), (34004, 630305), (38788, 552565), (42505, 504244), (48485, 442052), (85010, 252122), (96970, 221026), (110513, 193940), (126061, 170020)]