247444015

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{331}}^1$

素因数の和:440

約数の個数: 64

約数和(自身を含む): 385523712

約数和(自身を除く): 138079697

約数列:

[1, 5, 7, 13, 31, 35, 53, 65, 91, 155, 217, 265, 331, 371, 403, 455, 689, 1085, 1643, 1655, 1855, 2015, 2317, 2821, 3445, 4303, 4823, 8215, 10261, 11501, 11585, 14105, 17543, 21359, 21515, 24115, 30121, 51305, 57505, 71827, 87715, 106795, 122801, 133393, 149513, 150605, 228059, 359135, 543833, 614005, 666965, 747565, 933751, 1140295, 1596413, 2719165, 3806831, 4668755, 7069829, 7982065, 19034155, 35349145, 49488803, 247444015]

約数ペア:

[(1, 247444015), (5, 49488803), (7, 35349145), (13, 19034155), (31, 7982065), (35, 7069829), (53, 4668755), (65, 3806831), (91, 2719165), (155, 1596413), (217, 1140295), (265, 933751), (331, 747565), (371, 666965), (403, 614005), (455, 543833), (689, 359135), (1085, 228059), (1643, 150605), (1655, 149513), (1855, 133393), (2015, 122801), (2317, 106795), (2821, 87715), (3445, 71827), (4303, 57505), (4823, 51305), (8215, 30121), (10261, 24115), (11501, 21515), (11585, 21359), (14105, 17543)]