18186880

素因数分解:

$2^7\times 5^1\times {\mathrm{157}}^1\times {\mathrm{181}}^1$

素因数の和:357

約数の個数: 64

約数和(自身を含む): 43996680

約数和(自身を除く): 25809800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 157, 160, 181, 314, 320, 362, 628, 640, 724, 785, 905, 1256, 1448, 1570, 1810, 2512, 2896, 3140, 3620, 5024, 5792, 6280, 7240, 10048, 11584, 12560, 14480, 20096, 23168, 25120, 28417, 28960, 50240, 56834, 57920, 100480, 113668, 115840, 142085, 227336, 284170, 454672, 568340, 909344, 1136680, 1818688, 2273360, 3637376, 4546720, 9093440, 18186880]

約数ペア:

[(1, 18186880), (2, 9093440), (4, 4546720), (5, 3637376), (8, 2273360), (10, 1818688), (16, 1136680), (20, 909344), (32, 568340), (40, 454672), (64, 284170), (80, 227336), (128, 142085), (157, 115840), (160, 113668), (181, 100480), (314, 57920), (320, 56834), (362, 50240), (628, 28960), (640, 28417), (724, 25120), (785, 23168), (905, 20096), (1256, 14480), (1448, 12560), (1570, 11584), (1810, 10048), (2512, 7240), (2896, 6280), (3140, 5792), (3620, 5024)]