19938866480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{661103}}^1$

素因数の和:661158

約数の個数: 80

約数和(自身を含む): 51645444480

約数和(自身を除く): 31706578000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 29, 40, 52, 58, 65, 80, 104, 116, 130, 145, 208, 232, 260, 290, 377, 464, 520, 580, 754, 1040, 1160, 1508, 1885, 2320, 3016, 3770, 6032, 7540, 15080, 30160, 661103, 1322206, 2644412, 3305515, 5288824, 6611030, 8594339, 10577648, 13222060, 17188678, 19171987, 26444120, 34377356, 38343974, 42971695, 52888240, 68754712, 76687948, 85943390, 95859935, 137509424, 153375896, 171886780, 191719870, 249235831, 306751792, 343773560, 383439740, 498471662, 687547120, 766879480, 996943324, 1246179155, 1533758960, 1993886648, 2492358310, 3987773296, 4984716620, 9969433240, 19938866480]

約数ペア:

[(1, 19938866480), (2, 9969433240), (4, 4984716620), (5, 3987773296), (8, 2492358310), (10, 1993886648), (13, 1533758960), (16, 1246179155), (20, 996943324), (26, 766879480), (29, 687547120), (40, 498471662), (52, 383439740), (58, 343773560), (65, 306751792), (80, 249235831), (104, 191719870), (116, 171886780), (130, 153375896), (145, 137509424), (208, 95859935), (232, 85943390), (260, 76687948), (290, 68754712), (377, 52888240), (464, 42971695), (520, 38343974), (580, 34377356), (754, 26444120), (1040, 19171987), (1160, 17188678), (1508, 13222060), (1885, 10577648), (2320, 8594339), (3016, 6611030), (3770, 5288824), (6032, 3305515), (7540, 2644412), (15080, 1322206), (30160, 661103)]