81026560

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1021}}^1$

素因数の和:1075

約数の個数: 80

約数和(自身を含む): 200737152

約数和(自身を除く): 119710592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1021, 1240, 1280, 1984, 2042, 2480, 2560, 3968, 4084, 4960, 5105, 7936, 8168, 9920, 10210, 15872, 16336, 19840, 20420, 31651, 32672, 39680, 40840, 63302, 65344, 79360, 81680, 126604, 130688, 158255, 163360, 253208, 261376, 316510, 326720, 506416, 522752, 633020, 653440, 1012832, 1266040, 1306880, 2025664, 2532080, 2613760, 4051328, 5064160, 8102656, 10128320, 16205312, 20256640, 40513280, 81026560]

約数ペア:

[(1, 81026560), (2, 40513280), (4, 20256640), (5, 16205312), (8, 10128320), (10, 8102656), (16, 5064160), (20, 4051328), (31, 2613760), (32, 2532080), (40, 2025664), (62, 1306880), (64, 1266040), (80, 1012832), (124, 653440), (128, 633020), (155, 522752), (160, 506416), (248, 326720), (256, 316510), (310, 261376), (320, 253208), (496, 163360), (512, 158255), (620, 130688), (640, 126604), (992, 81680), (1021, 79360), (1240, 65344), (1280, 63302), (1984, 40840), (2042, 39680), (2480, 32672), (2560, 31651), (3968, 20420), (4084, 19840), (4960, 16336), (5105, 15872), (7936, 10210), (8168, 9920)]