78160000

素因数分解:

$2^7\times 5^4\times {\mathrm{977}}^1$

素因数の和:1011

約数の個数: 80

約数和(自身を含む): 194773590

約数和(自身を除く): 116613590

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 500, 625, 640, 800, 977, 1000, 1250, 1600, 1954, 2000, 2500, 3200, 3908, 4000, 4885, 5000, 7816, 8000, 9770, 10000, 15632, 16000, 19540, 20000, 24425, 31264, 39080, 40000, 48850, 62528, 78160, 80000, 97700, 122125, 125056, 156320, 195400, 244250, 312640, 390800, 488500, 610625, 625280, 781600, 977000, 1221250, 1563200, 1954000, 2442500, 3126400, 3908000, 4885000, 7816000, 9770000, 15632000, 19540000, 39080000, 78160000]

約数ペア:

[(1, 78160000), (2, 39080000), (4, 19540000), (5, 15632000), (8, 9770000), (10, 7816000), (16, 4885000), (20, 3908000), (25, 3126400), (32, 2442500), (40, 1954000), (50, 1563200), (64, 1221250), (80, 977000), (100, 781600), (125, 625280), (128, 610625), (160, 488500), (200, 390800), (250, 312640), (320, 244250), (400, 195400), (500, 156320), (625, 125056), (640, 122125), (800, 97700), (977, 80000), (1000, 78160), (1250, 62528), (1600, 48850), (1954, 40000), (2000, 39080), (2500, 31264), (3200, 24425), (3908, 20000), (4000, 19540), (4885, 16000), (5000, 15632), (7816, 10000), (8000, 9770)]