19812394996

素因数分解:

$2^2\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{1789}}^1$

素因数の和:1965

約数の個数: 72

約数和(自身を含む): 37227331680

約数和(自身を除く): 17414936684

約数列:

[1, 2, 4, 31, 43, 62, 67, 86, 124, 134, 172, 268, 961, 1333, 1789, 1922, 2077, 2666, 2881, 3578, 3844, 4154, 5332, 5762, 7156, 8308, 11524, 41323, 55459, 64387, 76927, 82646, 89311, 110918, 119863, 128774, 153854, 165292, 178622, 221836, 239726, 257548, 307708, 357244, 479452, 1719229, 2384737, 2768641, 3438458, 3715753, 4769474, 5154109, 5537282, 6876916, 7431506, 9538948, 10308218, 11074564, 14863012, 20616436, 73926847, 115188343, 147853694, 159777379, 230376686, 295707388, 319554758, 460753372, 639109516, 4953098749, 9906197498, 19812394996]

約数ペア:

[(1, 19812394996), (2, 9906197498), (4, 4953098749), (31, 639109516), (43, 460753372), (62, 319554758), (67, 295707388), (86, 230376686), (124, 159777379), (134, 147853694), (172, 115188343), (268, 73926847), (961, 20616436), (1333, 14863012), (1789, 11074564), (1922, 10308218), (2077, 9538948), (2666, 7431506), (2881, 6876916), (3578, 5537282), (3844, 5154109), (4154, 4769474), (5332, 3715753), (5762, 3438458), (7156, 2768641), (8308, 2384737), (11524, 1719229), (41323, 479452), (55459, 357244), (64387, 307708), (76927, 257548), (82646, 239726), (89311, 221836), (110918, 178622), (119863, 165292), (128774, 153854)]