20901870

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{491}}^1$

素因数の和:558

約数の個数: 96

約数和(自身を含む): 60787584

約数和(自身を除く): 39885714

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 43, 45, 55, 66, 86, 90, 99, 110, 129, 165, 198, 215, 258, 330, 387, 430, 473, 491, 495, 645, 774, 946, 982, 990, 1290, 1419, 1473, 1935, 2365, 2455, 2838, 2946, 3870, 4257, 4419, 4730, 4910, 5401, 7095, 7365, 8514, 8838, 10802, 14190, 14730, 16203, 21113, 21285, 22095, 27005, 32406, 42226, 42570, 44190, 48609, 54010, 63339, 81015, 97218, 105565, 126678, 162030, 190017, 211130, 232243, 243045, 316695, 380034, 464486, 486090, 633390, 696729, 950085, 1161215, 1393458, 1900170, 2090187, 2322430, 3483645, 4180374, 6967290, 10450935, 20901870]

約数ペア:

[(1, 20901870), (2, 10450935), (3, 6967290), (5, 4180374), (6, 3483645), (9, 2322430), (10, 2090187), (11, 1900170), (15, 1393458), (18, 1161215), (22, 950085), (30, 696729), (33, 633390), (43, 486090), (45, 464486), (55, 380034), (66, 316695), (86, 243045), (90, 232243), (99, 211130), (110, 190017), (129, 162030), (165, 126678), (198, 105565), (215, 97218), (258, 81015), (330, 63339), (387, 54010), (430, 48609), (473, 44190), (491, 42570), (495, 42226), (645, 32406), (774, 27005), (946, 22095), (982, 21285), (990, 21113), (1290, 16203), (1419, 14730), (1473, 14190), (1935, 10802), (2365, 8838), (2455, 8514), (2838, 7365), (2946, 7095), (3870, 5401), (4257, 4910), (4419, 4730)]