28785920

素因数分解:

$2^8\times 5^1\times {\mathrm{43}}^1\times {\mathrm{523}}^1$

素因数の和:587

約数の個数: 72

約数和(自身を含む): 70689696

約数和(自身を除く): 41903776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 160, 172, 215, 256, 320, 344, 430, 523, 640, 688, 860, 1046, 1280, 1376, 1720, 2092, 2615, 2752, 3440, 4184, 5230, 5504, 6880, 8368, 10460, 11008, 13760, 16736, 20920, 22489, 27520, 33472, 41840, 44978, 55040, 66944, 83680, 89956, 112445, 133888, 167360, 179912, 224890, 334720, 359824, 449780, 669440, 719648, 899560, 1439296, 1799120, 2878592, 3598240, 5757184, 7196480, 14392960, 28785920]

約数ペア:

[(1, 28785920), (2, 14392960), (4, 7196480), (5, 5757184), (8, 3598240), (10, 2878592), (16, 1799120), (20, 1439296), (32, 899560), (40, 719648), (43, 669440), (64, 449780), (80, 359824), (86, 334720), (128, 224890), (160, 179912), (172, 167360), (215, 133888), (256, 112445), (320, 89956), (344, 83680), (430, 66944), (523, 55040), (640, 44978), (688, 41840), (860, 33472), (1046, 27520), (1280, 22489), (1376, 20920), (1720, 16736), (2092, 13760), (2615, 11008), (2752, 10460), (3440, 8368), (4184, 6880), (5230, 5504)]