20463440

素因数分解:

$2^4\times 5^1\times {\mathrm{229}}^1\times {\mathrm{1117}}^1$

素因数の和:1359

約数の個数: 40

約数和(自身を含む): 47828040

約数和(自身を除く): 27364600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 229, 458, 916, 1117, 1145, 1832, 2234, 2290, 3664, 4468, 4580, 5585, 8936, 9160, 11170, 17872, 18320, 22340, 44680, 89360, 255793, 511586, 1023172, 1278965, 2046344, 2557930, 4092688, 5115860, 10231720, 20463440]

約数ペア:

[(1, 20463440), (2, 10231720), (4, 5115860), (5, 4092688), (8, 2557930), (10, 2046344), (16, 1278965), (20, 1023172), (40, 511586), (80, 255793), (229, 89360), (458, 44680), (916, 22340), (1117, 18320), (1145, 17872), (1832, 11170), (2234, 9160), (2290, 8936), (3664, 5585), (4468, 4580)]