858251920

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1\times {\mathrm{809}}^1$

素因数の和:1060

約数の個数: 80

約数和(自身を含む): 2033910000

約数和(自身を除く): 1175658080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 149, 178, 298, 356, 445, 596, 712, 745, 809, 890, 1192, 1424, 1490, 1618, 1780, 2384, 2980, 3236, 3560, 4045, 5960, 6472, 7120, 8090, 11920, 12944, 13261, 16180, 26522, 32360, 53044, 64720, 66305, 72001, 106088, 120541, 132610, 144002, 212176, 241082, 265220, 288004, 360005, 482164, 530440, 576008, 602705, 720010, 964328, 1060880, 1152016, 1205410, 1440020, 1928656, 2410820, 2880040, 4821640, 5760080, 9643280, 10728149, 21456298, 42912596, 53640745, 85825192, 107281490, 171650384, 214562980, 429125960, 858251920]

約数ペア:

[(1, 858251920), (2, 429125960), (4, 214562980), (5, 171650384), (8, 107281490), (10, 85825192), (16, 53640745), (20, 42912596), (40, 21456298), (80, 10728149), (89, 9643280), (149, 5760080), (178, 4821640), (298, 2880040), (356, 2410820), (445, 1928656), (596, 1440020), (712, 1205410), (745, 1152016), (809, 1060880), (890, 964328), (1192, 720010), (1424, 602705), (1490, 576008), (1618, 530440), (1780, 482164), (2384, 360005), (2980, 288004), (3236, 265220), (3560, 241082), (4045, 212176), (5960, 144002), (6472, 132610), (7120, 120541), (8090, 106088), (11920, 72001), (12944, 66305), (13261, 64720), (16180, 53044), (26522, 32360)]