21238879600

素因数分解:

$2^4\times 5^2\times {\mathrm{3571}}^1\times {\mathrm{14869}}^1$

素因数の和:18458

約数の個数: 60

約数和(自身を含む): 51044130040

約数和(自身を除く): 29805250440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 3571, 7142, 14284, 14869, 17855, 28568, 29738, 35710, 57136, 59476, 71420, 74345, 89275, 118952, 142840, 148690, 178550, 237904, 285680, 297380, 357100, 371725, 594760, 714200, 743450, 1189520, 1428400, 1486900, 2973800, 5947600, 53097199, 106194398, 212388796, 265485995, 424777592, 530971990, 849555184, 1061943980, 1327429975, 2123887960, 2654859950, 4247775920, 5309719900, 10619439800, 21238879600]

約数ペア:

[(1, 21238879600), (2, 10619439800), (4, 5309719900), (5, 4247775920), (8, 2654859950), (10, 2123887960), (16, 1327429975), (20, 1061943980), (25, 849555184), (40, 530971990), (50, 424777592), (80, 265485995), (100, 212388796), (200, 106194398), (400, 53097199), (3571, 5947600), (7142, 2973800), (14284, 1486900), (14869, 1428400), (17855, 1189520), (28568, 743450), (29738, 714200), (35710, 594760), (57136, 371725), (59476, 357100), (71420, 297380), (74345, 285680), (89275, 237904), (118952, 178550), (142840, 148690)]