19678490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:327

約数の個数: 64

約数和(自身を含む): 41610240

約数和(自身を除く): 21931750

約数列:

[1, 2, 5, 10, 13, 19, 26, 31, 38, 62, 65, 95, 130, 155, 190, 247, 257, 310, 403, 494, 514, 589, 806, 1178, 1235, 1285, 2015, 2470, 2570, 2945, 3341, 4030, 4883, 5890, 6682, 7657, 7967, 9766, 15314, 15934, 16705, 24415, 33410, 38285, 39835, 48830, 63479, 76570, 79670, 103571, 126958, 151373, 207142, 302746, 317395, 517855, 634790, 756865, 1035710, 1513730, 1967849, 3935698, 9839245, 19678490]

約数ペア:

[(1, 19678490), (2, 9839245), (5, 3935698), (10, 1967849), (13, 1513730), (19, 1035710), (26, 756865), (31, 634790), (38, 517855), (62, 317395), (65, 302746), (95, 207142), (130, 151373), (155, 126958), (190, 103571), (247, 79670), (257, 76570), (310, 63479), (403, 48830), (494, 39835), (514, 38285), (589, 33410), (806, 24415), (1178, 16705), (1235, 15934), (1285, 15314), (2015, 9766), (2470, 7967), (2570, 7657), (2945, 6682), (3341, 5890), (4030, 4883)]