21838720

素因数分解:

$2^7\times 5^1\times {\mathrm{34123}}^1$

素因数の和:34142

約数の個数: 32

約数和(自身を含む): 52209720

約数和(自身を除く): 30371000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 34123, 68246, 136492, 170615, 272984, 341230, 545968, 682460, 1091936, 1364920, 2183872, 2729840, 4367744, 5459680, 10919360, 21838720]

約数ペア:

[(1, 21838720), (2, 10919360), (4, 5459680), (5, 4367744), (8, 2729840), (10, 2183872), (16, 1364920), (20, 1091936), (32, 682460), (40, 545968), (64, 341230), (80, 272984), (128, 170615), (160, 136492), (320, 68246), (640, 34123)]