1282019920

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{262709}}^1$

素因数の和:262783

約数の個数: 40

約数和(自身を含む): 3029571720

約数和(自身を除く): 1747551800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 262709, 525418, 1050836, 1313545, 2101672, 2627090, 4203344, 5254180, 10508360, 16025249, 21016720, 32050498, 64100996, 80126245, 128201992, 160252490, 256403984, 320504980, 641009960, 1282019920]

約数ペア:

[(1, 1282019920), (2, 641009960), (4, 320504980), (5, 256403984), (8, 160252490), (10, 128201992), (16, 80126245), (20, 64100996), (40, 32050498), (61, 21016720), (80, 16025249), (122, 10508360), (244, 5254180), (305, 4203344), (488, 2627090), (610, 2101672), (976, 1313545), (1220, 1050836), (2440, 525418), (4880, 262709)]