20091720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{491}}^1$

素因数の和:547

約数の個数: 128

約数和(自身を含む): 68014080

約数和(自身を除く): 47922360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 31, 33, 40, 44, 55, 60, 62, 66, 88, 93, 110, 120, 124, 132, 155, 165, 186, 220, 248, 264, 310, 330, 341, 372, 440, 465, 491, 620, 660, 682, 744, 930, 982, 1023, 1240, 1320, 1364, 1473, 1705, 1860, 1964, 2046, 2455, 2728, 2946, 3410, 3720, 3928, 4092, 4910, 5115, 5401, 5892, 6820, 7365, 8184, 9820, 10230, 10802, 11784, 13640, 14730, 15221, 16203, 19640, 20460, 21604, 27005, 29460, 30442, 32406, 40920, 43208, 45663, 54010, 58920, 60884, 64812, 76105, 81015, 91326, 108020, 121768, 129624, 152210, 162030, 167431, 182652, 216040, 228315, 304420, 324060, 334862, 365304, 456630, 502293, 608840, 648120, 669724, 837155, 913260, 1004586, 1339448, 1674310, 1826520, 2009172, 2511465, 3348620, 4018344, 5022930, 6697240, 10045860, 20091720]

約数ペア:

[(1, 20091720), (2, 10045860), (3, 6697240), (4, 5022930), (5, 4018344), (6, 3348620), (8, 2511465), (10, 2009172), (11, 1826520), (12, 1674310), (15, 1339448), (20, 1004586), (22, 913260), (24, 837155), (30, 669724), (31, 648120), (33, 608840), (40, 502293), (44, 456630), (55, 365304), (60, 334862), (62, 324060), (66, 304420), (88, 228315), (93, 216040), (110, 182652), (120, 167431), (124, 162030), (132, 152210), (155, 129624), (165, 121768), (186, 108020), (220, 91326), (248, 81015), (264, 76105), (310, 64812), (330, 60884), (341, 58920), (372, 54010), (440, 45663), (465, 43208), (491, 40920), (620, 32406), (660, 30442), (682, 29460), (744, 27005), (930, 21604), (982, 20460), (1023, 19640), (1240, 16203), (1320, 15221), (1364, 14730), (1473, 13640), (1705, 11784), (1860, 10802), (1964, 10230), (2046, 9820), (2455, 8184), (2728, 7365), (2946, 6820), (3410, 5892), (3720, 5401), (3928, 5115), (4092, 4910)]