2912139920

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{521}}^1\times {\mathrm{641}}^1$

素因数の和:1284

約数の個数: 80

約数和(自身を含む): 6856637040

約数和(自身を除く): 3944497120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 521, 545, 641, 872, 1042, 1090, 1282, 1744, 2084, 2180, 2564, 2605, 3205, 4168, 4360, 5128, 5210, 6410, 8336, 8720, 10256, 10420, 12820, 20840, 25640, 41680, 51280, 56789, 69869, 113578, 139738, 227156, 279476, 283945, 333961, 349345, 454312, 558952, 567890, 667922, 698690, 908624, 1117904, 1135780, 1335844, 1397380, 1669805, 2271560, 2671688, 2794760, 3339610, 4543120, 5343376, 5589520, 6679220, 13358440, 26716880, 36401749, 72803498, 145606996, 182008745, 291213992, 364017490, 582427984, 728034980, 1456069960, 2912139920]

約数ペア:

[(1, 2912139920), (2, 1456069960), (4, 728034980), (5, 582427984), (8, 364017490), (10, 291213992), (16, 182008745), (20, 145606996), (40, 72803498), (80, 36401749), (109, 26716880), (218, 13358440), (436, 6679220), (521, 5589520), (545, 5343376), (641, 4543120), (872, 3339610), (1042, 2794760), (1090, 2671688), (1282, 2271560), (1744, 1669805), (2084, 1397380), (2180, 1335844), (2564, 1135780), (2605, 1117904), (3205, 908624), (4168, 698690), (4360, 667922), (5128, 567890), (5210, 558952), (6410, 454312), (8336, 349345), (8720, 333961), (10256, 283945), (10420, 279476), (12820, 227156), (20840, 139738), (25640, 113578), (41680, 69869), (51280, 56789)]