80912000

素因数分解:

$2^7\times 5^3\times {\mathrm{13}}^1\times {\mathrm{389}}^1$

素因数の和:431

約数の個数: 128

約数和(自身を含む): 217198800

約数和(自身を除く): 136286800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 125, 128, 130, 160, 200, 208, 250, 260, 320, 325, 389, 400, 416, 500, 520, 640, 650, 778, 800, 832, 1000, 1040, 1300, 1556, 1600, 1625, 1664, 1945, 2000, 2080, 2600, 3112, 3200, 3250, 3890, 4000, 4160, 5057, 5200, 6224, 6500, 7780, 8000, 8320, 9725, 10114, 10400, 12448, 13000, 15560, 16000, 19450, 20228, 20800, 24896, 25285, 26000, 31120, 38900, 40456, 41600, 48625, 49792, 50570, 52000, 62240, 77800, 80912, 97250, 101140, 104000, 124480, 126425, 155600, 161824, 194500, 202280, 208000, 248960, 252850, 311200, 323648, 389000, 404560, 505700, 622400, 632125, 647296, 778000, 809120, 1011400, 1244800, 1264250, 1556000, 1618240, 2022800, 2528500, 3112000, 3236480, 4045600, 5057000, 6224000, 8091200, 10114000, 16182400, 20228000, 40456000, 80912000]

約数ペア:

[(1, 80912000), (2, 40456000), (4, 20228000), (5, 16182400), (8, 10114000), (10, 8091200), (13, 6224000), (16, 5057000), (20, 4045600), (25, 3236480), (26, 3112000), (32, 2528500), (40, 2022800), (50, 1618240), (52, 1556000), (64, 1264250), (65, 1244800), (80, 1011400), (100, 809120), (104, 778000), (125, 647296), (128, 632125), (130, 622400), (160, 505700), (200, 404560), (208, 389000), (250, 323648), (260, 311200), (320, 252850), (325, 248960), (389, 208000), (400, 202280), (416, 194500), (500, 161824), (520, 155600), (640, 126425), (650, 124480), (778, 104000), (800, 101140), (832, 97250), (1000, 80912), (1040, 77800), (1300, 62240), (1556, 52000), (1600, 50570), (1625, 49792), (1664, 48625), (1945, 41600), (2000, 40456), (2080, 38900), (2600, 31120), (3112, 26000), (3200, 25285), (3250, 24896), (3890, 20800), (4000, 20228), (4160, 19450), (5057, 16000), (5200, 15560), (6224, 13000), (6500, 12448), (7780, 10400), (8000, 10114), (8320, 9725)]