18866464

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{439}}^1$

素因数の和:545

約数の個数: 48

約数和(自身を含む): 39916800

約数和(自身を除く): 21050336

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 79, 136, 158, 272, 316, 439, 544, 632, 878, 1264, 1343, 1756, 2528, 2686, 3512, 5372, 7024, 7463, 10744, 14048, 14926, 21488, 29852, 34681, 42976, 59704, 69362, 119408, 138724, 238816, 277448, 554896, 589577, 1109792, 1179154, 2358308, 4716616, 9433232, 18866464]

約数ペア:

[(1, 18866464), (2, 9433232), (4, 4716616), (8, 2358308), (16, 1179154), (17, 1109792), (32, 589577), (34, 554896), (68, 277448), (79, 238816), (136, 138724), (158, 119408), (272, 69362), (316, 59704), (439, 42976), (544, 34681), (632, 29852), (878, 21488), (1264, 14926), (1343, 14048), (1756, 10744), (2528, 7463), (2686, 7024), (3512, 5372)]