261640000

素因数分解:

$2^6\times 5^4\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:274

約数の個数: 140

約数和(自身を含む): 672884608

約数和(自身を除く): 411244608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 124, 125, 155, 160, 200, 211, 248, 250, 310, 320, 400, 422, 496, 500, 620, 625, 775, 800, 844, 992, 1000, 1055, 1240, 1250, 1550, 1600, 1688, 1984, 2000, 2110, 2480, 2500, 3100, 3376, 3875, 4000, 4220, 4960, 5000, 5275, 6200, 6541, 6752, 7750, 8000, 8440, 9920, 10000, 10550, 12400, 13082, 13504, 15500, 16880, 19375, 20000, 21100, 24800, 26164, 26375, 31000, 32705, 33760, 38750, 40000, 42200, 49600, 52328, 52750, 62000, 65410, 67520, 77500, 84400, 104656, 105500, 124000, 130820, 131875, 155000, 163525, 168800, 209312, 211000, 248000, 261640, 263750, 310000, 327050, 337600, 418624, 422000, 523280, 527500, 620000, 654100, 817625, 844000, 1046560, 1055000, 1240000, 1308200, 1635250, 1688000, 2093120, 2110000, 2616400, 3270500, 4088125, 4220000, 5232800, 6541000, 8176250, 8440000, 10465600, 13082000, 16352500, 26164000, 32705000, 52328000, 65410000, 130820000, 261640000]

約数ペア:

[(1, 261640000), (2, 130820000), (4, 65410000), (5, 52328000), (8, 32705000), (10, 26164000), (16, 16352500), (20, 13082000), (25, 10465600), (31, 8440000), (32, 8176250), (40, 6541000), (50, 5232800), (62, 4220000), (64, 4088125), (80, 3270500), (100, 2616400), (124, 2110000), (125, 2093120), (155, 1688000), (160, 1635250), (200, 1308200), (211, 1240000), (248, 1055000), (250, 1046560), (310, 844000), (320, 817625), (400, 654100), (422, 620000), (496, 527500), (500, 523280), (620, 422000), (625, 418624), (775, 337600), (800, 327050), (844, 310000), (992, 263750), (1000, 261640), (1055, 248000), (1240, 211000), (1250, 209312), (1550, 168800), (1600, 163525), (1688, 155000), (1984, 131875), (2000, 130820), (2110, 124000), (2480, 105500), (2500, 104656), (3100, 84400), (3376, 77500), (3875, 67520), (4000, 65410), (4220, 62000), (4960, 52750), (5000, 52328), (5275, 49600), (6200, 42200), (6541, 40000), (6752, 38750), (7750, 33760), (8000, 32705), (8440, 31000), (9920, 26375), (10000, 26164), (10550, 24800), (12400, 21100), (13082, 20000), (13504, 19375), (15500, 16880)]