81221440

素因数分解:

$2^6\times 5^1\times {\mathrm{53}}^1\times {\mathrm{4789}}^1$

素因数の和:4859

約数の個数: 56

約数和(自身を含む): 197098920

約数和(自身を除く): 115877480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 64, 80, 106, 160, 212, 265, 320, 424, 530, 848, 1060, 1696, 2120, 3392, 4240, 4789, 8480, 9578, 16960, 19156, 23945, 38312, 47890, 76624, 95780, 153248, 191560, 253817, 306496, 383120, 507634, 766240, 1015268, 1269085, 1532480, 2030536, 2538170, 4061072, 5076340, 8122144, 10152680, 16244288, 20305360, 40610720, 81221440]

約数ペア:

[(1, 81221440), (2, 40610720), (4, 20305360), (5, 16244288), (8, 10152680), (10, 8122144), (16, 5076340), (20, 4061072), (32, 2538170), (40, 2030536), (53, 1532480), (64, 1269085), (80, 1015268), (106, 766240), (160, 507634), (212, 383120), (265, 306496), (320, 253817), (424, 191560), (530, 153248), (848, 95780), (1060, 76624), (1696, 47890), (2120, 38312), (3392, 23945), (4240, 19156), (4789, 16960), (8480, 9578)]