21431040

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{5581}}^1$

素因数の和:5605

約数の個数: 72

約数和(自身を含む): 68457648

約数和(自身を除く): 47026608

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, 256, 320, 384, 480, 640, 768, 960, 1280, 1920, 3840, 5581, 11162, 16743, 22324, 27905, 33486, 44648, 55810, 66972, 83715, 89296, 111620, 133944, 167430, 178592, 223240, 267888, 334860, 357184, 446480, 535776, 669720, 714368, 892960, 1071552, 1339440, 1428736, 1785920, 2143104, 2678880, 3571840, 4286208, 5357760, 7143680, 10715520, 21431040]

約数ペア:

[(1, 21431040), (2, 10715520), (3, 7143680), (4, 5357760), (5, 4286208), (6, 3571840), (8, 2678880), (10, 2143104), (12, 1785920), (15, 1428736), (16, 1339440), (20, 1071552), (24, 892960), (30, 714368), (32, 669720), (40, 535776), (48, 446480), (60, 357184), (64, 334860), (80, 267888), (96, 223240), (120, 178592), (128, 167430), (160, 133944), (192, 111620), (240, 89296), (256, 83715), (320, 66972), (384, 55810), (480, 44648), (640, 33486), (768, 27905), (960, 22324), (1280, 16743), (1920, 11162), (3840, 5581)]