261317600

素因数分解:

$2^5\times 5^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:349

約数の個数: 144

約数和(自身を含む): 677206656

約数和(自身を除く): 415889056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 41, 50, 62, 80, 82, 100, 124, 155, 160, 164, 200, 205, 248, 257, 310, 328, 400, 410, 496, 514, 620, 656, 775, 800, 820, 992, 1025, 1028, 1240, 1271, 1285, 1312, 1550, 1640, 2050, 2056, 2480, 2542, 2570, 3100, 3280, 4100, 4112, 4960, 5084, 5140, 6200, 6355, 6425, 6560, 7967, 8200, 8224, 10168, 10280, 10537, 12400, 12710, 12850, 15934, 16400, 20336, 20560, 21074, 24800, 25420, 25700, 31775, 31868, 32800, 39835, 40672, 41120, 42148, 50840, 51400, 52685, 63550, 63736, 79670, 84296, 101680, 102800, 105370, 127100, 127472, 159340, 168592, 199175, 203360, 205600, 210740, 254200, 254944, 263425, 318680, 326647, 337184, 398350, 421480, 508400, 526850, 637360, 653294, 796700, 842960, 1016800, 1053700, 1274720, 1306588, 1593400, 1633235, 1685920, 2107400, 2613176, 3186800, 3266470, 4214800, 5226352, 6373600, 6532940, 8166175, 8429600, 10452704, 13065880, 16332350, 26131760, 32664700, 52263520, 65329400, 130658800, 261317600]

約数ペア:

[(1, 261317600), (2, 130658800), (4, 65329400), (5, 52263520), (8, 32664700), (10, 26131760), (16, 16332350), (20, 13065880), (25, 10452704), (31, 8429600), (32, 8166175), (40, 6532940), (41, 6373600), (50, 5226352), (62, 4214800), (80, 3266470), (82, 3186800), (100, 2613176), (124, 2107400), (155, 1685920), (160, 1633235), (164, 1593400), (200, 1306588), (205, 1274720), (248, 1053700), (257, 1016800), (310, 842960), (328, 796700), (400, 653294), (410, 637360), (496, 526850), (514, 508400), (620, 421480), (656, 398350), (775, 337184), (800, 326647), (820, 318680), (992, 263425), (1025, 254944), (1028, 254200), (1240, 210740), (1271, 205600), (1285, 203360), (1312, 199175), (1550, 168592), (1640, 159340), (2050, 127472), (2056, 127100), (2480, 105370), (2542, 102800), (2570, 101680), (3100, 84296), (3280, 79670), (4100, 63736), (4112, 63550), (4960, 52685), (5084, 51400), (5140, 50840), (6200, 42148), (6355, 41120), (6425, 40672), (6560, 39835), (7967, 32800), (8200, 31868), (8224, 31775), (10168, 25700), (10280, 25420), (10537, 24800), (12400, 21074), (12710, 20560), (12850, 20336), (15934, 16400)]