1649487680

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{647}}^1$

素因数の和:952

約数の個数: 112

約数和(自身を含む): 4076614656

約数和(自身を除く): 2427126976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 257, 310, 320, 496, 514, 620, 647, 992, 1028, 1240, 1285, 1294, 1984, 2056, 2480, 2570, 2588, 3235, 4112, 4960, 5140, 5176, 6470, 7967, 8224, 9920, 10280, 10352, 12940, 15934, 16448, 20057, 20560, 20704, 25880, 31868, 39835, 40114, 41120, 41408, 51760, 63736, 79670, 80228, 82240, 100285, 103520, 127472, 159340, 160456, 166279, 200570, 207040, 254944, 318680, 320912, 332558, 401140, 509888, 637360, 641824, 665116, 802280, 831395, 1274720, 1283648, 1330232, 1604560, 1662790, 2549440, 2660464, 3209120, 3325580, 5154649, 5320928, 6418240, 6651160, 10309298, 10641856, 13302320, 20618596, 25773245, 26604640, 41237192, 51546490, 53209280, 82474384, 103092980, 164948768, 206185960, 329897536, 412371920, 824743840, 1649487680]

約数ペア:

[(1, 1649487680), (2, 824743840), (4, 412371920), (5, 329897536), (8, 206185960), (10, 164948768), (16, 103092980), (20, 82474384), (31, 53209280), (32, 51546490), (40, 41237192), (62, 26604640), (64, 25773245), (80, 20618596), (124, 13302320), (155, 10641856), (160, 10309298), (248, 6651160), (257, 6418240), (310, 5320928), (320, 5154649), (496, 3325580), (514, 3209120), (620, 2660464), (647, 2549440), (992, 1662790), (1028, 1604560), (1240, 1330232), (1285, 1283648), (1294, 1274720), (1984, 831395), (2056, 802280), (2480, 665116), (2570, 641824), (2588, 637360), (3235, 509888), (4112, 401140), (4960, 332558), (5140, 320912), (5176, 318680), (6470, 254944), (7967, 207040), (8224, 200570), (9920, 166279), (10280, 160456), (10352, 159340), (12940, 127472), (15934, 103520), (16448, 100285), (20057, 82240), (20560, 80228), (20704, 79670), (25880, 63736), (31868, 51760), (39835, 41408), (40114, 41120)]