21673856680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77406631}}^1$

素因数の和:77406649

約数の個数: 32

約数和(自身を含む): 55732775040

約数和(自身を除く): 34058918360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77406631, 154813262, 309626524, 387033155, 541846417, 619253048, 774066310, 1083692834, 1548132620, 2167385668, 2709232085, 3096265240, 4334771336, 5418464170, 10836928340, 21673856680]

約数ペア:

[(1, 21673856680), (2, 10836928340), (4, 5418464170), (5, 4334771336), (7, 3096265240), (8, 2709232085), (10, 2167385668), (14, 1548132620), (20, 1083692834), (28, 774066310), (35, 619253048), (40, 541846417), (56, 387033155), (70, 309626524), (140, 154813262), (280, 77406631)]