72225280

素因数分解:

$2^9\times 5^1\times {\mathrm{89}}^1\times {\mathrm{317}}^1$

素因数の和:429

約数の個数: 80

約数和(自身を含む): 175669560

約数和(自身を除く): 103444280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 128, 160, 178, 256, 317, 320, 356, 445, 512, 634, 640, 712, 890, 1268, 1280, 1424, 1585, 1780, 2536, 2560, 2848, 3170, 3560, 5072, 5696, 6340, 7120, 10144, 11392, 12680, 14240, 20288, 22784, 25360, 28213, 28480, 40576, 45568, 50720, 56426, 56960, 81152, 101440, 112852, 113920, 141065, 162304, 202880, 225704, 227840, 282130, 405760, 451408, 564260, 811520, 902816, 1128520, 1805632, 2257040, 3611264, 4514080, 7222528, 9028160, 14445056, 18056320, 36112640, 72225280]

約数ペア:

[(1, 72225280), (2, 36112640), (4, 18056320), (5, 14445056), (8, 9028160), (10, 7222528), (16, 4514080), (20, 3611264), (32, 2257040), (40, 1805632), (64, 1128520), (80, 902816), (89, 811520), (128, 564260), (160, 451408), (178, 405760), (256, 282130), (317, 227840), (320, 225704), (356, 202880), (445, 162304), (512, 141065), (634, 113920), (640, 112852), (712, 101440), (890, 81152), (1268, 56960), (1280, 56426), (1424, 50720), (1585, 45568), (1780, 40576), (2536, 28480), (2560, 28213), (2848, 25360), (3170, 22784), (3560, 20288), (5072, 14240), (5696, 12680), (6340, 11392), (7120, 10144)]