18931568

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{283}}^1$

素因数の和:441

約数の個数: 40

約数和(自身を含む): 38138928

約数和(自身を除く): 19207360

約数列:

[1, 2, 4, 8, 16, 37, 74, 113, 148, 226, 283, 296, 452, 566, 592, 904, 1132, 1808, 2264, 4181, 4528, 8362, 10471, 16724, 20942, 31979, 33448, 41884, 63958, 66896, 83768, 127916, 167536, 255832, 511664, 1183223, 2366446, 4732892, 9465784, 18931568]

約数ペア:

[(1, 18931568), (2, 9465784), (4, 4732892), (8, 2366446), (16, 1183223), (37, 511664), (74, 255832), (113, 167536), (148, 127916), (226, 83768), (283, 66896), (296, 63958), (452, 41884), (566, 33448), (592, 31979), (904, 20942), (1132, 16724), (1808, 10471), (2264, 8362), (4181, 4528)]