21873920

素因数分解:

$2^8\times 5^1\times {\mathrm{23}}^1\times {\mathrm{743}}^1$

素因数の和:787

約数の個数: 72

約数和(自身を含む): 54746496

約数和(自身を除く): 32872576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 256, 320, 368, 460, 640, 736, 743, 920, 1280, 1472, 1486, 1840, 2944, 2972, 3680, 3715, 5888, 5944, 7360, 7430, 11888, 14720, 14860, 17089, 23776, 29440, 29720, 34178, 47552, 59440, 68356, 85445, 95104, 118880, 136712, 170890, 190208, 237760, 273424, 341780, 475520, 546848, 683560, 951040, 1093696, 1367120, 2187392, 2734240, 4374784, 5468480, 10936960, 21873920]

約数ペア:

[(1, 21873920), (2, 10936960), (4, 5468480), (5, 4374784), (8, 2734240), (10, 2187392), (16, 1367120), (20, 1093696), (23, 951040), (32, 683560), (40, 546848), (46, 475520), (64, 341780), (80, 273424), (92, 237760), (115, 190208), (128, 170890), (160, 136712), (184, 118880), (230, 95104), (256, 85445), (320, 68356), (368, 59440), (460, 47552), (640, 34178), (736, 29720), (743, 29440), (920, 23776), (1280, 17089), (1472, 14860), (1486, 14720), (1840, 11888), (2944, 7430), (2972, 7360), (3680, 5944), (3715, 5888)]