21910680

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{503}}^1$

素因数の和:542

約数の個数: 144

約数和(自身を含む): 78427440

約数和(自身を除く): 56516760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 55, 60, 66, 72, 88, 90, 99, 110, 120, 121, 132, 165, 180, 198, 220, 242, 264, 330, 360, 363, 396, 440, 484, 495, 503, 605, 660, 726, 792, 968, 990, 1006, 1089, 1210, 1320, 1452, 1509, 1815, 1980, 2012, 2178, 2420, 2515, 2904, 3018, 3630, 3960, 4024, 4356, 4527, 4840, 5030, 5445, 5533, 6036, 7260, 7545, 8712, 9054, 10060, 10890, 11066, 12072, 14520, 15090, 16599, 18108, 20120, 21780, 22132, 22635, 27665, 30180, 33198, 36216, 43560, 44264, 45270, 49797, 55330, 60360, 60863, 66396, 82995, 90540, 99594, 110660, 121726, 132792, 165990, 181080, 182589, 199188, 221320, 243452, 248985, 304315, 331980, 365178, 398376, 486904, 497970, 547767, 608630, 663960, 730356, 912945, 995940, 1095534, 1217260, 1460712, 1825890, 1991880, 2191068, 2434520, 2738835, 3651780, 4382136, 5477670, 7303560, 10955340, 21910680]

約数ペア:

[(1, 21910680), (2, 10955340), (3, 7303560), (4, 5477670), (5, 4382136), (6, 3651780), (8, 2738835), (9, 2434520), (10, 2191068), (11, 1991880), (12, 1825890), (15, 1460712), (18, 1217260), (20, 1095534), (22, 995940), (24, 912945), (30, 730356), (33, 663960), (36, 608630), (40, 547767), (44, 497970), (45, 486904), (55, 398376), (60, 365178), (66, 331980), (72, 304315), (88, 248985), (90, 243452), (99, 221320), (110, 199188), (120, 182589), (121, 181080), (132, 165990), (165, 132792), (180, 121726), (198, 110660), (220, 99594), (242, 90540), (264, 82995), (330, 66396), (360, 60863), (363, 60360), (396, 55330), (440, 49797), (484, 45270), (495, 44264), (503, 43560), (605, 36216), (660, 33198), (726, 30180), (792, 27665), (968, 22635), (990, 22132), (1006, 21780), (1089, 20120), (1210, 18108), (1320, 16599), (1452, 15090), (1509, 14520), (1815, 12072), (1980, 11066), (2012, 10890), (2178, 10060), (2420, 9054), (2515, 8712), (2904, 7545), (3018, 7260), (3630, 6036), (3960, 5533), (4024, 5445), (4356, 5030), (4527, 4840)]