16980498860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{257}}^1\times {\mathrm{1277}}^1$

素因数の和:1755

約数の個数: 96

約数和(自身を含む): 38775542400

約数和(自身を除く): 21795043540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 199, 257, 260, 398, 514, 796, 995, 1028, 1277, 1285, 1990, 2554, 2570, 2587, 3341, 3980, 5108, 5140, 5174, 6385, 6682, 10348, 12770, 12935, 13364, 16601, 16705, 25540, 25870, 33202, 33410, 51143, 51740, 66404, 66820, 83005, 102286, 166010, 204572, 254123, 255715, 328189, 332020, 508246, 511430, 656378, 664859, 1016492, 1022860, 1270615, 1312756, 1329718, 1640945, 2541230, 2659436, 3281890, 3303599, 3324295, 4266457, 5082460, 6563780, 6607198, 6648590, 8532914, 13214396, 13297180, 16517995, 17065828, 21332285, 33035990, 42664570, 65309611, 66071980, 85329140, 130619222, 261238444, 326548055, 653096110, 849024943, 1306192220, 1698049886, 3396099772, 4245124715, 8490249430, 16980498860]

約数ペア:

[(1, 16980498860), (2, 8490249430), (4, 4245124715), (5, 3396099772), (10, 1698049886), (13, 1306192220), (20, 849024943), (26, 653096110), (52, 326548055), (65, 261238444), (130, 130619222), (199, 85329140), (257, 66071980), (260, 65309611), (398, 42664570), (514, 33035990), (796, 21332285), (995, 17065828), (1028, 16517995), (1277, 13297180), (1285, 13214396), (1990, 8532914), (2554, 6648590), (2570, 6607198), (2587, 6563780), (3341, 5082460), (3980, 4266457), (5108, 3324295), (5140, 3303599), (5174, 3281890), (6385, 2659436), (6682, 2541230), (10348, 1640945), (12770, 1329718), (12935, 1312756), (13364, 1270615), (16601, 1022860), (16705, 1016492), (25540, 664859), (25870, 656378), (33202, 511430), (33410, 508246), (51143, 332020), (51740, 328189), (66404, 255715), (66820, 254123), (83005, 204572), (102286, 166010)]