389119900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{6961}}^1$

素因数の和:7031

約数の個数: 72

約数和(自身を含む): 930624464

約数和(自身を除く): 541504564

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 43, 50, 52, 65, 86, 100, 130, 172, 215, 260, 325, 430, 559, 650, 860, 1075, 1118, 1300, 2150, 2236, 2795, 4300, 5590, 6961, 11180, 13922, 13975, 27844, 27950, 34805, 55900, 69610, 90493, 139220, 174025, 180986, 299323, 348050, 361972, 452465, 598646, 696100, 904930, 1197292, 1496615, 1809860, 2262325, 2993230, 3891199, 4524650, 5986460, 7483075, 7782398, 9049300, 14966150, 15564796, 19455995, 29932300, 38911990, 77823980, 97279975, 194559950, 389119900]

約数ペア:

[(1, 389119900), (2, 194559950), (4, 97279975), (5, 77823980), (10, 38911990), (13, 29932300), (20, 19455995), (25, 15564796), (26, 14966150), (43, 9049300), (50, 7782398), (52, 7483075), (65, 5986460), (86, 4524650), (100, 3891199), (130, 2993230), (172, 2262325), (215, 1809860), (260, 1496615), (325, 1197292), (430, 904930), (559, 696100), (650, 598646), (860, 452465), (1075, 361972), (1118, 348050), (1300, 299323), (2150, 180986), (2236, 174025), (2795, 139220), (4300, 90493), (5590, 69610), (6961, 55900), (11180, 34805), (13922, 27950), (13975, 27844)]