1340567720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{479}}^1$

素因数の和:619

約数の個数: 128

約数和(自身を含む): 3256934400

約数和(自身を除く): 1916366680

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 37, 40, 61, 62, 74, 122, 124, 148, 155, 185, 244, 248, 296, 305, 310, 370, 479, 488, 610, 620, 740, 958, 1147, 1220, 1240, 1480, 1891, 1916, 2257, 2294, 2395, 2440, 3782, 3832, 4514, 4588, 4790, 5735, 7564, 9028, 9176, 9455, 9580, 11285, 11470, 14849, 15128, 17723, 18056, 18910, 19160, 22570, 22940, 29219, 29698, 35446, 37820, 45140, 45880, 58438, 59396, 69967, 70892, 74245, 75640, 88615, 90280, 116876, 118792, 139934, 141784, 146095, 148490, 177230, 233752, 279868, 292190, 296980, 349835, 354460, 549413, 559736, 584380, 593960, 699670, 708920, 905789, 1081103, 1098826, 1168760, 1399340, 1811578, 2162206, 2197652, 2747065, 2798680, 3623156, 4324412, 4395304, 4528945, 5405515, 5494130, 7246312, 8648824, 9057890, 10811030, 10988260, 18115780, 21622060, 21976520, 33514193, 36231560, 43244120, 67028386, 134056772, 167570965, 268113544, 335141930, 670283860, 1340567720]

約数ペア:

[(1, 1340567720), (2, 670283860), (4, 335141930), (5, 268113544), (8, 167570965), (10, 134056772), (20, 67028386), (31, 43244120), (37, 36231560), (40, 33514193), (61, 21976520), (62, 21622060), (74, 18115780), (122, 10988260), (124, 10811030), (148, 9057890), (155, 8648824), (185, 7246312), (244, 5494130), (248, 5405515), (296, 4528945), (305, 4395304), (310, 4324412), (370, 3623156), (479, 2798680), (488, 2747065), (610, 2197652), (620, 2162206), (740, 1811578), (958, 1399340), (1147, 1168760), (1220, 1098826), (1240, 1081103), (1480, 905789), (1891, 708920), (1916, 699670), (2257, 593960), (2294, 584380), (2395, 559736), (2440, 549413), (3782, 354460), (3832, 349835), (4514, 296980), (4588, 292190), (4790, 279868), (5735, 233752), (7564, 177230), (9028, 148490), (9176, 146095), (9455, 141784), (9580, 139934), (11285, 118792), (11470, 116876), (14849, 90280), (15128, 88615), (17723, 75640), (18056, 74245), (18910, 70892), (19160, 69967), (22570, 59396), (22940, 58438), (29219, 45880), (29698, 45140), (35446, 37820)]