28218880

素因数分解:

$2^9\times 5^1\times {\mathrm{73}}^1\times {\mathrm{151}}^1$

素因数の和:247

約数の個数: 80

約数和(自身を含む): 69040224

約数和(自身を除く): 40821344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 73, 80, 128, 146, 151, 160, 256, 292, 302, 320, 365, 512, 584, 604, 640, 730, 755, 1168, 1208, 1280, 1460, 1510, 2336, 2416, 2560, 2920, 3020, 4672, 4832, 5840, 6040, 9344, 9664, 11023, 11680, 12080, 18688, 19328, 22046, 23360, 24160, 37376, 38656, 44092, 46720, 48320, 55115, 77312, 88184, 93440, 96640, 110230, 176368, 186880, 193280, 220460, 352736, 386560, 440920, 705472, 881840, 1410944, 1763680, 2821888, 3527360, 5643776, 7054720, 14109440, 28218880]

約数ペア:

[(1, 28218880), (2, 14109440), (4, 7054720), (5, 5643776), (8, 3527360), (10, 2821888), (16, 1763680), (20, 1410944), (32, 881840), (40, 705472), (64, 440920), (73, 386560), (80, 352736), (128, 220460), (146, 193280), (151, 186880), (160, 176368), (256, 110230), (292, 96640), (302, 93440), (320, 88184), (365, 77312), (512, 55115), (584, 48320), (604, 46720), (640, 44092), (730, 38656), (755, 37376), (1168, 24160), (1208, 23360), (1280, 22046), (1460, 19328), (1510, 18688), (2336, 12080), (2416, 11680), (2560, 11023), (2920, 9664), (3020, 9344), (4672, 6040), (4832, 5840)]