20765203280

素因数分解:

$2^4\times 5^1\times {\mathrm{181}}^1\times {\mathrm{967}}^1\times {\mathrm{1483}}^1$

素因数の和:2644

約数の個数: 80

約数和(自身を含む): 48628804224

約数和(自身を除く): 27863600944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 181, 362, 724, 905, 967, 1448, 1483, 1810, 1934, 2896, 2966, 3620, 3868, 4835, 5932, 7240, 7415, 7736, 9670, 11864, 14480, 14830, 15472, 19340, 23728, 29660, 38680, 59320, 77360, 118640, 175027, 268423, 350054, 536846, 700108, 875135, 1073692, 1342115, 1400216, 1434061, 1750270, 2147384, 2684230, 2800432, 2868122, 3500540, 4294768, 5368460, 5736244, 7001080, 7170305, 10736920, 11472488, 14002160, 14340610, 21473840, 22944976, 28681220, 57362440, 114724880, 259565041, 519130082, 1038260164, 1297825205, 2076520328, 2595650410, 4153040656, 5191300820, 10382601640, 20765203280]

約数ペア:

[(1, 20765203280), (2, 10382601640), (4, 5191300820), (5, 4153040656), (8, 2595650410), (10, 2076520328), (16, 1297825205), (20, 1038260164), (40, 519130082), (80, 259565041), (181, 114724880), (362, 57362440), (724, 28681220), (905, 22944976), (967, 21473840), (1448, 14340610), (1483, 14002160), (1810, 11472488), (1934, 10736920), (2896, 7170305), (2966, 7001080), (3620, 5736244), (3868, 5368460), (4835, 4294768), (5932, 3500540), (7240, 2868122), (7415, 2800432), (7736, 2684230), (9670, 2147384), (11864, 1750270), (14480, 1434061), (14830, 1400216), (15472, 1342115), (19340, 1073692), (23728, 875135), (29660, 700108), (38680, 536846), (59320, 350054), (77360, 268423), (118640, 175027)]