1990305400

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{321017}}^1$

素因数の和:321064

約数の個数: 48

約数和(自身を含む): 4776747840

約数和(自身を除く): 2786442440

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 155, 200, 248, 310, 620, 775, 1240, 1550, 3100, 6200, 321017, 642034, 1284068, 1605085, 2568136, 3210170, 6420340, 8025425, 9951527, 12840680, 16050850, 19903054, 32101700, 39806108, 49757635, 64203400, 79612216, 99515270, 199030540, 248788175, 398061080, 497576350, 995152700, 1990305400]

約数ペア:

[(1, 1990305400), (2, 995152700), (4, 497576350), (5, 398061080), (8, 248788175), (10, 199030540), (20, 99515270), (25, 79612216), (31, 64203400), (40, 49757635), (50, 39806108), (62, 32101700), (100, 19903054), (124, 16050850), (155, 12840680), (200, 9951527), (248, 8025425), (310, 6420340), (620, 3210170), (775, 2568136), (1240, 1605085), (1550, 1284068), (3100, 642034), (6200, 321017)]