19802510

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{463}}^1$

素因数の和:537

約数の個数: 64

約数和(自身を含む): 44900352

約数和(自身を除く): 25097842

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 47, 65, 70, 91, 94, 130, 182, 235, 329, 455, 463, 470, 611, 658, 910, 926, 1222, 1645, 2315, 3055, 3241, 3290, 4277, 4630, 6019, 6110, 6482, 8554, 12038, 16205, 21385, 21761, 30095, 32410, 42133, 42770, 43522, 60190, 84266, 108805, 152327, 210665, 217610, 282893, 304654, 421330, 565786, 761635, 1414465, 1523270, 1980251, 2828930, 3960502, 9901255, 19802510]

約数ペア:

[(1, 19802510), (2, 9901255), (5, 3960502), (7, 2828930), (10, 1980251), (13, 1523270), (14, 1414465), (26, 761635), (35, 565786), (47, 421330), (65, 304654), (70, 282893), (91, 217610), (94, 210665), (130, 152327), (182, 108805), (235, 84266), (329, 60190), (455, 43522), (463, 42770), (470, 42133), (611, 32410), (658, 30095), (910, 21761), (926, 21385), (1222, 16205), (1645, 12038), (2315, 8554), (3055, 6482), (3241, 6110), (3290, 6019), (4277, 4630)]