256672000

素因数分解:

$2^8\times 5^3\times {\mathrm{13}}^1\times {\mathrm{617}}^1$

素因数の和:661

約数の個数: 144

約数和(自身を含む): 689702832

約数和(自身を除く): 433030832

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, 256, 260, 320, 325, 400, 416, 500, 520, 617, 640, 650, 800, 832, 1000, 1040, 1234, 1280, 1300, 1600, 1625, 1664, 2000, 2080, 2468, 2600, 3085, 3200, 3250, 3328, 4000, 4160, 4936, 5200, 6170, 6400, 6500, 8000, 8021, 8320, 9872, 10400, 12340, 13000, 15425, 16000, 16042, 16640, 19744, 20800, 24680, 26000, 30850, 32000, 32084, 39488, 40105, 41600, 49360, 52000, 61700, 64168, 77125, 78976, 80210, 83200, 98720, 104000, 123400, 128336, 154250, 157952, 160420, 197440, 200525, 208000, 246800, 256672, 308500, 320840, 394880, 401050, 416000, 493600, 513344, 617000, 641680, 789760, 802100, 987200, 1002625, 1026688, 1234000, 1283360, 1604200, 1974400, 2005250, 2053376, 2468000, 2566720, 3208400, 3948800, 4010500, 4936000, 5133440, 6416800, 8021000, 9872000, 10266880, 12833600, 16042000, 19744000, 25667200, 32084000, 51334400, 64168000, 128336000, 256672000]

約数ペア:

[(1, 256672000), (2, 128336000), (4, 64168000), (5, 51334400), (8, 32084000), (10, 25667200), (13, 19744000), (16, 16042000), (20, 12833600), (25, 10266880), (26, 9872000), (32, 8021000), (40, 6416800), (50, 5133440), (52, 4936000), (64, 4010500), (65, 3948800), (80, 3208400), (100, 2566720), (104, 2468000), (125, 2053376), (128, 2005250), (130, 1974400), (160, 1604200), (200, 1283360), (208, 1234000), (250, 1026688), (256, 1002625), (260, 987200), (320, 802100), (325, 789760), (400, 641680), (416, 617000), (500, 513344), (520, 493600), (617, 416000), (640, 401050), (650, 394880), (800, 320840), (832, 308500), (1000, 256672), (1040, 246800), (1234, 208000), (1280, 200525), (1300, 197440), (1600, 160420), (1625, 157952), (1664, 154250), (2000, 128336), (2080, 123400), (2468, 104000), (2600, 98720), (3085, 83200), (3200, 80210), (3250, 78976), (3328, 77125), (4000, 64168), (4160, 61700), (4936, 52000), (5200, 49360), (6170, 41600), (6400, 40105), (6500, 39488), (8000, 32084), (8021, 32000), (8320, 30850), (9872, 26000), (10400, 24680), (12340, 20800), (13000, 19744), (15425, 16640), (16000, 16042)]