81231840

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2969}}^1$

素因数の和:3009

約数の個数: 144

約数和(自身を含む): 291891600

約数和(自身を除く): 210659760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 32, 36, 38, 40, 45, 48, 57, 60, 72, 76, 80, 90, 95, 96, 114, 120, 144, 152, 160, 171, 180, 190, 228, 240, 285, 288, 304, 342, 360, 380, 456, 480, 570, 608, 684, 720, 760, 855, 912, 1140, 1368, 1440, 1520, 1710, 1824, 2280, 2736, 2969, 3040, 3420, 4560, 5472, 5938, 6840, 8907, 9120, 11876, 13680, 14845, 17814, 23752, 26721, 27360, 29690, 35628, 44535, 47504, 53442, 56411, 59380, 71256, 89070, 95008, 106884, 112822, 118760, 133605, 142512, 169233, 178140, 213768, 225644, 237520, 267210, 282055, 285024, 338466, 356280, 427536, 451288, 475040, 507699, 534420, 564110, 676932, 712560, 846165, 855072, 902576, 1015398, 1068840, 1128220, 1353864, 1425120, 1692330, 1805152, 2030796, 2137680, 2256440, 2538495, 2707728, 3384660, 4061592, 4275360, 4512880, 5076990, 5415456, 6769320, 8123184, 9025760, 10153980, 13538640, 16246368, 20307960, 27077280, 40615920, 81231840]

約数ペア:

[(1, 81231840), (2, 40615920), (3, 27077280), (4, 20307960), (5, 16246368), (6, 13538640), (8, 10153980), (9, 9025760), (10, 8123184), (12, 6769320), (15, 5415456), (16, 5076990), (18, 4512880), (19, 4275360), (20, 4061592), (24, 3384660), (30, 2707728), (32, 2538495), (36, 2256440), (38, 2137680), (40, 2030796), (45, 1805152), (48, 1692330), (57, 1425120), (60, 1353864), (72, 1128220), (76, 1068840), (80, 1015398), (90, 902576), (95, 855072), (96, 846165), (114, 712560), (120, 676932), (144, 564110), (152, 534420), (160, 507699), (171, 475040), (180, 451288), (190, 427536), (228, 356280), (240, 338466), (285, 285024), (288, 282055), (304, 267210), (342, 237520), (360, 225644), (380, 213768), (456, 178140), (480, 169233), (570, 142512), (608, 133605), (684, 118760), (720, 112822), (760, 106884), (855, 95008), (912, 89070), (1140, 71256), (1368, 59380), (1440, 56411), (1520, 53442), (1710, 47504), (1824, 44535), (2280, 35628), (2736, 29690), (2969, 27360), (3040, 26721), (3420, 23752), (4560, 17814), (5472, 14845), (5938, 13680), (6840, 11876), (8907, 9120)]