1909940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 4309200

約数和(自身を除く): 2399260

約数列:

[1, 2, 4, 5, 10, 20, 29, 37, 58, 74, 89, 116, 145, 148, 178, 185, 290, 356, 370, 445, 580, 740, 890, 1073, 1780, 2146, 2581, 3293, 4292, 5162, 5365, 6586, 10324, 10730, 12905, 13172, 16465, 21460, 25810, 32930, 51620, 65860, 95497, 190994, 381988, 477485, 954970, 1909940]

約数ペア:

[(1, 1909940), (2, 954970), (4, 477485), (5, 381988), (10, 190994), (20, 95497), (29, 65860), (37, 51620), (58, 32930), (74, 25810), (89, 21460), (116, 16465), (145, 13172), (148, 12905), (178, 10730), (185, 10324), (290, 6586), (356, 5365), (370, 5162), (445, 4292), (580, 3293), (740, 2581), (890, 2146), (1073, 1780)]