78231890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:299

約数の個数: 64

約数和(自身を含む): 159096960

約数和(自身を除く): 80865070

約数列:

[1, 2, 5, 10, 11, 22, 55, 61, 89, 110, 122, 131, 178, 262, 305, 445, 610, 655, 671, 890, 979, 1310, 1342, 1441, 1958, 2882, 3355, 4895, 5429, 6710, 7205, 7991, 9790, 10858, 11659, 14410, 15982, 23318, 27145, 39955, 54290, 58295, 59719, 79910, 87901, 116590, 119438, 128249, 175802, 256498, 298595, 439505, 597190, 641245, 711199, 879010, 1282490, 1422398, 3555995, 7111990, 7823189, 15646378, 39115945, 78231890]

約数ペア:

[(1, 78231890), (2, 39115945), (5, 15646378), (10, 7823189), (11, 7111990), (22, 3555995), (55, 1422398), (61, 1282490), (89, 879010), (110, 711199), (122, 641245), (131, 597190), (178, 439505), (262, 298595), (305, 256498), (445, 175802), (610, 128249), (655, 119438), (671, 116590), (890, 87901), (979, 79910), (1310, 59719), (1342, 58295), (1441, 54290), (1958, 39955), (2882, 27145), (3355, 23318), (4895, 15982), (5429, 14410), (6710, 11659), (7205, 10858), (7991, 9790)]