201221840

素因数分解:

$2^4\times 5^1\times {\mathrm{2515273}}^1$

素因数の和:2515286

約数の個数: 20

約数和(自身を含む): 467840964

約数和(自身を除く): 266619124

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2515273, 5030546, 10061092, 12576365, 20122184, 25152730, 40244368, 50305460, 100610920, 201221840]

約数ペア:

[(1, 201221840), (2, 100610920), (4, 50305460), (5, 40244368), (8, 25152730), (10, 20122184), (16, 12576365), (20, 10061092), (40, 5030546), (80, 2515273)]