21724160

素因数分解:

$2^{10}\times 5^1\times {\mathrm{4243}}^1$

素因数の和:4268

約数の個数: 44

約数和(自身を含む): 52124808

約数和(自身を除く): 30400648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 4243, 5120, 8486, 16972, 21215, 33944, 42430, 67888, 84860, 135776, 169720, 271552, 339440, 543104, 678880, 1086208, 1357760, 2172416, 2715520, 4344832, 5431040, 10862080, 21724160]

約数ペア:

[(1, 21724160), (2, 10862080), (4, 5431040), (5, 4344832), (8, 2715520), (10, 2172416), (16, 1357760), (20, 1086208), (32, 678880), (40, 543104), (64, 339440), (80, 271552), (128, 169720), (160, 135776), (256, 84860), (320, 67888), (512, 42430), (640, 33944), (1024, 21215), (1280, 16972), (2560, 8486), (4243, 5120)]