51400520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{269}}^1\times {\mathrm{281}}^1$

素因数の和:578

約数の個数: 64

約数和(自身を含む): 123346800

約数和(自身を除く): 71946280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 269, 281, 340, 538, 562, 680, 1076, 1124, 1345, 1405, 2152, 2248, 2690, 2810, 4573, 4777, 5380, 5620, 9146, 9554, 10760, 11240, 18292, 19108, 22865, 23885, 36584, 38216, 45730, 47770, 75589, 91460, 95540, 151178, 182920, 191080, 302356, 377945, 604712, 755890, 1285013, 1511780, 2570026, 3023560, 5140052, 6425065, 10280104, 12850130, 25700260, 51400520]

約数ペア:

[(1, 51400520), (2, 25700260), (4, 12850130), (5, 10280104), (8, 6425065), (10, 5140052), (17, 3023560), (20, 2570026), (34, 1511780), (40, 1285013), (68, 755890), (85, 604712), (136, 377945), (170, 302356), (269, 191080), (281, 182920), (340, 151178), (538, 95540), (562, 91460), (680, 75589), (1076, 47770), (1124, 45730), (1345, 38216), (1405, 36584), (2152, 23885), (2248, 22865), (2690, 19108), (2810, 18292), (4573, 11240), (4777, 10760), (5380, 9554), (5620, 9146)]