30897920

素因数分解:

$2^8\times 5^1\times {\mathrm{101}}^1\times {\mathrm{239}}^1$

素因数の和:361

約数の個数: 72

約数和(自身を含む): 75055680

約数和(自身を除く): 44157760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 101, 128, 160, 202, 239, 256, 320, 404, 478, 505, 640, 808, 956, 1010, 1195, 1280, 1616, 1912, 2020, 2390, 3232, 3824, 4040, 4780, 6464, 7648, 8080, 9560, 12928, 15296, 16160, 19120, 24139, 25856, 30592, 32320, 38240, 48278, 61184, 64640, 76480, 96556, 120695, 129280, 152960, 193112, 241390, 305920, 386224, 482780, 772448, 965560, 1544896, 1931120, 3089792, 3862240, 6179584, 7724480, 15448960, 30897920]

約数ペア:

[(1, 30897920), (2, 15448960), (4, 7724480), (5, 6179584), (8, 3862240), (10, 3089792), (16, 1931120), (20, 1544896), (32, 965560), (40, 772448), (64, 482780), (80, 386224), (101, 305920), (128, 241390), (160, 193112), (202, 152960), (239, 129280), (256, 120695), (320, 96556), (404, 76480), (478, 64640), (505, 61184), (640, 48278), (808, 38240), (956, 32320), (1010, 30592), (1195, 25856), (1280, 24139), (1616, 19120), (1912, 16160), (2020, 15296), (2390, 12928), (3232, 9560), (3824, 8080), (4040, 7648), (4780, 6464)]