21949740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{619}}^1$

素因数の和:831

約数の個数: 72

約数和(自身を含む): 67026960

約数和(自身を除く): 45077220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 197, 394, 591, 619, 788, 985, 1182, 1238, 1773, 1857, 1970, 2364, 2476, 2955, 3095, 3546, 3714, 3940, 5571, 5910, 6190, 7092, 7428, 8865, 9285, 11142, 11820, 12380, 17730, 18570, 22284, 27855, 35460, 37140, 55710, 111420, 121943, 243886, 365829, 487772, 609715, 731658, 1097487, 1219430, 1463316, 1829145, 2194974, 2438860, 3658290, 4389948, 5487435, 7316580, 10974870, 21949740]

約数ペア:

[(1, 21949740), (2, 10974870), (3, 7316580), (4, 5487435), (5, 4389948), (6, 3658290), (9, 2438860), (10, 2194974), (12, 1829145), (15, 1463316), (18, 1219430), (20, 1097487), (30, 731658), (36, 609715), (45, 487772), (60, 365829), (90, 243886), (180, 121943), (197, 111420), (394, 55710), (591, 37140), (619, 35460), (788, 27855), (985, 22284), (1182, 18570), (1238, 17730), (1773, 12380), (1857, 11820), (1970, 11142), (2364, 9285), (2476, 8865), (2955, 7428), (3095, 7092), (3546, 6190), (3714, 5910), (3940, 5571)]