19855744

素因数分解:

$2^7\times {\mathrm{61}}^1\times {\mathrm{2543}}^1$

素因数の和:2618

約数の個数: 32

約数和(自身を含む): 40220640

約数和(自身を除く): 20364896

約数列:

[1, 2, 4, 8, 16, 32, 61, 64, 122, 128, 244, 488, 976, 1952, 2543, 3904, 5086, 7808, 10172, 20344, 40688, 81376, 155123, 162752, 310246, 325504, 620492, 1240984, 2481968, 4963936, 9927872, 19855744]

約数ペア:

[(1, 19855744), (2, 9927872), (4, 4963936), (8, 2481968), (16, 1240984), (32, 620492), (61, 325504), (64, 310246), (122, 162752), (128, 155123), (244, 81376), (488, 40688), (976, 20344), (1952, 10172), (2543, 7808), (3904, 5086)]