20609520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1087}}^1$

素因数の和:1182

約数の個数: 80

約数和(自身を含む): 64757760

約数和(自身を除く): 44148240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 79, 80, 120, 158, 237, 240, 316, 395, 474, 632, 790, 948, 1087, 1185, 1264, 1580, 1896, 2174, 2370, 3160, 3261, 3792, 4348, 4740, 5435, 6320, 6522, 8696, 9480, 10870, 13044, 16305, 17392, 18960, 21740, 26088, 32610, 43480, 52176, 65220, 85873, 86960, 130440, 171746, 257619, 260880, 343492, 429365, 515238, 686984, 858730, 1030476, 1288095, 1373968, 1717460, 2060952, 2576190, 3434920, 4121904, 5152380, 6869840, 10304760, 20609520]

約数ペア:

[(1, 20609520), (2, 10304760), (3, 6869840), (4, 5152380), (5, 4121904), (6, 3434920), (8, 2576190), (10, 2060952), (12, 1717460), (15, 1373968), (16, 1288095), (20, 1030476), (24, 858730), (30, 686984), (40, 515238), (48, 429365), (60, 343492), (79, 260880), (80, 257619), (120, 171746), (158, 130440), (237, 86960), (240, 85873), (316, 65220), (395, 52176), (474, 43480), (632, 32610), (790, 26088), (948, 21740), (1087, 18960), (1185, 17392), (1264, 16305), (1580, 13044), (1896, 10870), (2174, 9480), (2370, 8696), (3160, 6522), (3261, 6320), (3792, 5435), (4348, 4740)]