21093620

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 45638208

約数和(自身を除く): 24544588

約数列:

[1, 2, 4, 5, 10, 20, 83, 97, 131, 166, 194, 262, 332, 388, 415, 485, 524, 655, 830, 970, 1310, 1660, 1940, 2620, 8051, 10873, 12707, 16102, 21746, 25414, 32204, 40255, 43492, 50828, 54365, 63535, 80510, 108730, 127070, 161020, 217460, 254140, 1054681, 2109362, 4218724, 5273405, 10546810, 21093620]

約数ペア:

[(1, 21093620), (2, 10546810), (4, 5273405), (5, 4218724), (10, 2109362), (20, 1054681), (83, 254140), (97, 217460), (131, 161020), (166, 127070), (194, 108730), (262, 80510), (332, 63535), (388, 54365), (415, 50828), (485, 43492), (524, 40255), (655, 32204), (830, 25414), (970, 21746), (1310, 16102), (1660, 12707), (1940, 10873), (2620, 8051)]