20864640

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{10867}}^1$

素因数の和:10889

約数の個数: 64

約数和(自身を含む): 66512160

約数和(自身を除く): 45647520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 320, 384, 480, 640, 960, 1920, 10867, 21734, 32601, 43468, 54335, 65202, 86936, 108670, 130404, 163005, 173872, 217340, 260808, 326010, 347744, 434680, 521616, 652020, 695488, 869360, 1043232, 1304040, 1390976, 1738720, 2086464, 2608080, 3477440, 4172928, 5216160, 6954880, 10432320, 20864640]

約数ペア:

[(1, 20864640), (2, 10432320), (3, 6954880), (4, 5216160), (5, 4172928), (6, 3477440), (8, 2608080), (10, 2086464), (12, 1738720), (15, 1390976), (16, 1304040), (20, 1043232), (24, 869360), (30, 695488), (32, 652020), (40, 521616), (48, 434680), (60, 347744), (64, 326010), (80, 260808), (96, 217340), (120, 173872), (128, 163005), (160, 130404), (192, 108670), (240, 86936), (320, 65202), (384, 54335), (480, 43468), (640, 32601), (960, 21734), (1920, 10867)]