18734720

素因数分解:

$2^7\times 5^1\times {\mathrm{73}}^1\times {\mathrm{401}}^1$

素因数の和:493

約数の個数: 64

約数和(自身を含む): 45514440

約数和(自身を除く): 26779720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 73, 80, 128, 146, 160, 292, 320, 365, 401, 584, 640, 730, 802, 1168, 1460, 1604, 2005, 2336, 2920, 3208, 4010, 4672, 5840, 6416, 8020, 9344, 11680, 12832, 16040, 23360, 25664, 29273, 32080, 46720, 51328, 58546, 64160, 117092, 128320, 146365, 234184, 256640, 292730, 468368, 585460, 936736, 1170920, 1873472, 2341840, 3746944, 4683680, 9367360, 18734720]

約数ペア:

[(1, 18734720), (2, 9367360), (4, 4683680), (5, 3746944), (8, 2341840), (10, 1873472), (16, 1170920), (20, 936736), (32, 585460), (40, 468368), (64, 292730), (73, 256640), (80, 234184), (128, 146365), (146, 128320), (160, 117092), (292, 64160), (320, 58546), (365, 51328), (401, 46720), (584, 32080), (640, 29273), (730, 25664), (802, 23360), (1168, 16040), (1460, 12832), (1604, 11680), (2005, 9344), (2336, 8020), (2920, 6416), (3208, 5840), (4010, 4672)]