19969890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:347

約数の個数: 64

約数和(自身を含む): 50181120

約数和(自身を除く): 30211230

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 93, 109, 155, 186, 197, 218, 310, 327, 394, 465, 545, 591, 654, 930, 985, 1090, 1182, 1635, 1970, 2955, 3270, 3379, 5910, 6107, 6758, 10137, 12214, 16895, 18321, 20274, 21473, 30535, 33790, 36642, 42946, 50685, 61070, 64419, 91605, 101370, 107365, 128838, 183210, 214730, 322095, 644190, 665663, 1331326, 1996989, 3328315, 3993978, 6656630, 9984945, 19969890]

約数ペア:

[(1, 19969890), (2, 9984945), (3, 6656630), (5, 3993978), (6, 3328315), (10, 1996989), (15, 1331326), (30, 665663), (31, 644190), (62, 322095), (93, 214730), (109, 183210), (155, 128838), (186, 107365), (197, 101370), (218, 91605), (310, 64419), (327, 61070), (394, 50685), (465, 42946), (545, 36642), (591, 33790), (654, 30535), (930, 21473), (985, 20274), (1090, 18321), (1182, 16895), (1635, 12214), (1970, 10137), (2955, 6758), (3270, 6107), (3379, 5910)]