1817961520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{661}}^1\times {\mathrm{1109}}^1$

素因数の和:1814

約数の個数: 80

約数和(自身を含む): 4373648640

約数和(自身を除く): 2555687120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 661, 1109, 1240, 1322, 2218, 2480, 2644, 3305, 4436, 5288, 5545, 6610, 8872, 10576, 11090, 13220, 17744, 20491, 22180, 26440, 34379, 40982, 44360, 52880, 68758, 81964, 88720, 102455, 137516, 163928, 171895, 204910, 275032, 327856, 343790, 409820, 550064, 687580, 733049, 819640, 1375160, 1466098, 1639280, 2750320, 2932196, 3665245, 5864392, 7330490, 11728784, 14660980, 22724519, 29321960, 45449038, 58643920, 90898076, 113622595, 181796152, 227245190, 363592304, 454490380, 908980760, 1817961520]

約数ペア:

[(1, 1817961520), (2, 908980760), (4, 454490380), (5, 363592304), (8, 227245190), (10, 181796152), (16, 113622595), (20, 90898076), (31, 58643920), (40, 45449038), (62, 29321960), (80, 22724519), (124, 14660980), (155, 11728784), (248, 7330490), (310, 5864392), (496, 3665245), (620, 2932196), (661, 2750320), (1109, 1639280), (1240, 1466098), (1322, 1375160), (2218, 819640), (2480, 733049), (2644, 687580), (3305, 550064), (4436, 409820), (5288, 343790), (5545, 327856), (6610, 275032), (8872, 204910), (10576, 171895), (11090, 163928), (13220, 137516), (17744, 102455), (20491, 88720), (22180, 81964), (26440, 68758), (34379, 52880), (40982, 44360)]