1618996840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{643}}^1\times {\mathrm{3313}}^1$

素因数の和:3986

約数の個数: 64

約数和(自身を含む): 3841588800

約数和(自身を除く): 2222591960

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 643, 760, 1286, 2572, 3215, 3313, 5144, 6430, 6626, 12217, 12860, 13252, 16565, 24434, 25720, 26504, 33130, 48868, 61085, 62947, 66260, 97736, 122170, 125894, 132520, 244340, 251788, 314735, 488680, 503576, 629470, 1258940, 2130259, 2517880, 4260518, 8521036, 10651295, 17042072, 21302590, 40474921, 42605180, 80949842, 85210360, 161899684, 202374605, 323799368, 404749210, 809498420, 1618996840]

約数ペア:

[(1, 1618996840), (2, 809498420), (4, 404749210), (5, 323799368), (8, 202374605), (10, 161899684), (19, 85210360), (20, 80949842), (38, 42605180), (40, 40474921), (76, 21302590), (95, 17042072), (152, 10651295), (190, 8521036), (380, 4260518), (643, 2517880), (760, 2130259), (1286, 1258940), (2572, 629470), (3215, 503576), (3313, 488680), (5144, 314735), (6430, 251788), (6626, 244340), (12217, 132520), (12860, 125894), (13252, 122170), (16565, 97736), (24434, 66260), (25720, 62947), (26504, 61085), (33130, 48868)]