400396048

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{503}}^1$

素因数の和:656

約数の個数: 80

約数和(自身を含む): 866194560

約数和(自身を除く): 465798512

約数列:

[1, 2, 4, 8, 13, 16, 26, 43, 52, 86, 89, 104, 172, 178, 208, 344, 356, 503, 559, 688, 712, 1006, 1118, 1157, 1424, 2012, 2236, 2314, 3827, 4024, 4472, 4628, 6539, 7654, 8048, 8944, 9256, 13078, 15308, 18512, 21629, 26156, 30616, 43258, 44767, 49751, 52312, 61232, 86516, 89534, 99502, 104624, 173032, 179068, 199004, 281177, 346064, 358136, 398008, 562354, 581971, 716272, 796016, 1124708, 1163942, 1924981, 2249416, 2327884, 3849962, 4498832, 4655768, 7699924, 9311536, 15399848, 25024753, 30799696, 50049506, 100099012, 200198024, 400396048]

約数ペア:

[(1, 400396048), (2, 200198024), (4, 100099012), (8, 50049506), (13, 30799696), (16, 25024753), (26, 15399848), (43, 9311536), (52, 7699924), (86, 4655768), (89, 4498832), (104, 3849962), (172, 2327884), (178, 2249416), (208, 1924981), (344, 1163942), (356, 1124708), (503, 796016), (559, 716272), (688, 581971), (712, 562354), (1006, 398008), (1118, 358136), (1157, 346064), (1424, 281177), (2012, 199004), (2236, 179068), (2314, 173032), (3827, 104624), (4024, 99502), (4472, 89534), (4628, 86516), (6539, 61232), (7654, 52312), (8048, 49751), (8944, 44767), (9256, 43258), (13078, 30616), (15308, 26156), (18512, 21629)]