18979936

素因数分解:

$2^5\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:132

約数の個数: 72

約数和(自身を含む): 41477184

約数和(自身を除く): 22497248

約数列:

[1, 2, 4, 8, 16, 19, 31, 32, 38, 53, 62, 76, 106, 124, 152, 212, 248, 304, 361, 424, 496, 589, 608, 722, 848, 992, 1007, 1178, 1444, 1643, 1696, 2014, 2356, 2888, 3286, 4028, 4712, 5776, 6572, 8056, 9424, 11191, 11552, 13144, 16112, 18848, 19133, 22382, 26288, 31217, 32224, 38266, 44764, 52576, 62434, 76532, 89528, 124868, 153064, 179056, 249736, 306128, 358112, 499472, 593123, 612256, 998944, 1186246, 2372492, 4744984, 9489968, 18979936]

約数ペア:

[(1, 18979936), (2, 9489968), (4, 4744984), (8, 2372492), (16, 1186246), (19, 998944), (31, 612256), (32, 593123), (38, 499472), (53, 358112), (62, 306128), (76, 249736), (106, 179056), (124, 153064), (152, 124868), (212, 89528), (248, 76532), (304, 62434), (361, 52576), (424, 44764), (496, 38266), (589, 32224), (608, 31217), (722, 26288), (848, 22382), (992, 19133), (1007, 18848), (1178, 16112), (1444, 13144), (1643, 11552), (1696, 11191), (2014, 9424), (2356, 8056), (2888, 6572), (3286, 5776), (4028, 4712)]