19659140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{863}}^1$

素因数の和:956

約数の個数: 48

約数和(自身を含む): 44416512

約数和(自身を除く): 24757372

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 67, 68, 85, 134, 170, 268, 335, 340, 670, 863, 1139, 1340, 1726, 2278, 3452, 4315, 4556, 5695, 8630, 11390, 14671, 17260, 22780, 29342, 57821, 58684, 73355, 115642, 146710, 231284, 289105, 293420, 578210, 982957, 1156420, 1965914, 3931828, 4914785, 9829570, 19659140]

約数ペア:

[(1, 19659140), (2, 9829570), (4, 4914785), (5, 3931828), (10, 1965914), (17, 1156420), (20, 982957), (34, 578210), (67, 293420), (68, 289105), (85, 231284), (134, 146710), (170, 115642), (268, 73355), (335, 58684), (340, 57821), (670, 29342), (863, 22780), (1139, 17260), (1340, 14671), (1726, 11390), (2278, 8630), (3452, 5695), (4315, 4556)]