78687320

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{137}}^1\times {\mathrm{173}}^1$

素因数の和:404

約数の個数: 64

約数和(自身を含む): 181530720

約数和(自身を除く): 102843400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 137, 166, 173, 274, 332, 346, 415, 548, 664, 685, 692, 830, 865, 1096, 1370, 1384, 1660, 1730, 2740, 3320, 3460, 5480, 6920, 11371, 14359, 22742, 23701, 28718, 45484, 47402, 56855, 57436, 71795, 90968, 94804, 113710, 114872, 118505, 143590, 189608, 227420, 237010, 287180, 454840, 474020, 574360, 948040, 1967183, 3934366, 7868732, 9835915, 15737464, 19671830, 39343660, 78687320]

約数ペア:

[(1, 78687320), (2, 39343660), (4, 19671830), (5, 15737464), (8, 9835915), (10, 7868732), (20, 3934366), (40, 1967183), (83, 948040), (137, 574360), (166, 474020), (173, 454840), (274, 287180), (332, 237010), (346, 227420), (415, 189608), (548, 143590), (664, 118505), (685, 114872), (692, 113710), (830, 94804), (865, 90968), (1096, 71795), (1370, 57436), (1384, 56855), (1660, 47402), (1730, 45484), (2740, 28718), (3320, 23701), (3460, 22742), (5480, 14359), (6920, 11371)]