78639280

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1091}}^1$

素因数の和:1174

約数の個数: 80

約数和(自身を含む): 197424864

約数和(自身を除く): 118785584

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 53, 68, 80, 85, 106, 136, 170, 212, 265, 272, 340, 424, 530, 680, 848, 901, 1060, 1091, 1360, 1802, 2120, 2182, 3604, 4240, 4364, 4505, 5455, 7208, 8728, 9010, 10910, 14416, 17456, 18020, 18547, 21820, 36040, 37094, 43640, 57823, 72080, 74188, 87280, 92735, 115646, 148376, 185470, 231292, 289115, 296752, 370940, 462584, 578230, 741880, 925168, 982991, 1156460, 1483760, 1965982, 2312920, 3931964, 4625840, 4914955, 7863928, 9829910, 15727856, 19659820, 39319640, 78639280]

約数ペア:

[(1, 78639280), (2, 39319640), (4, 19659820), (5, 15727856), (8, 9829910), (10, 7863928), (16, 4914955), (17, 4625840), (20, 3931964), (34, 2312920), (40, 1965982), (53, 1483760), (68, 1156460), (80, 982991), (85, 925168), (106, 741880), (136, 578230), (170, 462584), (212, 370940), (265, 296752), (272, 289115), (340, 231292), (424, 185470), (530, 148376), (680, 115646), (848, 92735), (901, 87280), (1060, 74188), (1091, 72080), (1360, 57823), (1802, 43640), (2120, 37094), (2182, 36040), (3604, 21820), (4240, 18547), (4364, 18020), (4505, 17456), (5455, 14416), (7208, 10910), (8728, 9010)]