90001840

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{18443}}^1$

素因数の和:18517

約数の個数: 40

約数和(自身を含む): 212696208

約数和(自身を除く): 122694368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 18443, 36886, 73772, 92215, 147544, 184430, 295088, 368860, 737720, 1125023, 1475440, 2250046, 4500092, 5625115, 9000184, 11250230, 18000368, 22500460, 45000920, 90001840]

約数ペア:

[(1, 90001840), (2, 45000920), (4, 22500460), (5, 18000368), (8, 11250230), (10, 9000184), (16, 5625115), (20, 4500092), (40, 2250046), (61, 1475440), (80, 1125023), (122, 737720), (244, 368860), (305, 295088), (488, 184430), (610, 147544), (976, 92215), (1220, 73772), (2440, 36886), (4880, 18443)]