20921616560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20116939}}^1$

素因数の和:20116965

約数の個数: 40

約数和(自身を含む): 52384511760

約数和(自身を除く): 31462895200

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 20116939, 40233878, 80467756, 100584695, 160935512, 201169390, 261520207, 321871024, 402338780, 523040414, 804677560, 1046080828, 1307601035, 1609355120, 2092161656, 2615202070, 4184323312, 5230404140, 10460808280, 20921616560]

約数ペア:

[(1, 20921616560), (2, 10460808280), (4, 5230404140), (5, 4184323312), (8, 2615202070), (10, 2092161656), (13, 1609355120), (16, 1307601035), (20, 1046080828), (26, 804677560), (40, 523040414), (52, 402338780), (65, 321871024), (80, 261520207), (104, 201169390), (130, 160935512), (208, 100584695), (260, 80467756), (520, 40233878), (1040, 20116939)]