18971728

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{3671}}^1$

素因数の和:3715

約数の個数: 40

約数和(自身を含む): 40979520

約数和(自身を除く): 22007792

約数列:

[1, 2, 4, 8, 16, 17, 19, 34, 38, 68, 76, 136, 152, 272, 304, 323, 646, 1292, 2584, 3671, 5168, 7342, 14684, 29368, 58736, 62407, 69749, 124814, 139498, 249628, 278996, 499256, 557992, 998512, 1115984, 1185733, 2371466, 4742932, 9485864, 18971728]

約数ペア:

[(1, 18971728), (2, 9485864), (4, 4742932), (8, 2371466), (16, 1185733), (17, 1115984), (19, 998512), (34, 557992), (38, 499256), (68, 278996), (76, 249628), (136, 139498), (152, 124814), (272, 69749), (304, 62407), (323, 58736), (646, 29368), (1292, 14684), (2584, 7342), (3671, 5168)]