19719680

素因数分解:

$2^9\times 5^1\times {\mathrm{7703}}^1$

素因数の和:7726

約数の個数: 40

約数和(自身を含む): 47287152

約数和(自身を除く): 27567472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 7703, 15406, 30812, 38515, 61624, 77030, 123248, 154060, 246496, 308120, 492992, 616240, 985984, 1232480, 1971968, 2464960, 3943936, 4929920, 9859840, 19719680]

約数ペア:

[(1, 19719680), (2, 9859840), (4, 4929920), (5, 3943936), (8, 2464960), (10, 1971968), (16, 1232480), (20, 985984), (32, 616240), (40, 492992), (64, 308120), (80, 246496), (128, 154060), (160, 123248), (256, 77030), (320, 61624), (512, 38515), (640, 30812), (1280, 15406), (2560, 7703)]