19994615420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1\times {\mathrm{15749}}^1$

素因数の和:16047

約数の個数: 96

約数和(自身を含む): 47786760000

約数和(自身を除く): 27792144580

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 257, 260, 380, 494, 514, 988, 1028, 1235, 1285, 2470, 2570, 3341, 4883, 4940, 5140, 6682, 9766, 13364, 15749, 16705, 19532, 24415, 31498, 33410, 48830, 62996, 63479, 66820, 78745, 97660, 126958, 157490, 204737, 253916, 299231, 314980, 317395, 409474, 598462, 634790, 818948, 1023685, 1196924, 1269580, 1496155, 2047370, 2992310, 3890003, 4047493, 4094740, 5984620, 7780006, 8094986, 15560012, 16189972, 19450015, 20237465, 38900030, 40474930, 52617409, 76902367, 77800060, 80949860, 105234818, 153804734, 210469636, 263087045, 307609468, 384511835, 526174090, 769023670, 999730771, 1052348180, 1538047340, 1999461542, 3998923084, 4998653855, 9997307710, 19994615420]

約数ペア:

[(1, 19994615420), (2, 9997307710), (4, 4998653855), (5, 3998923084), (10, 1999461542), (13, 1538047340), (19, 1052348180), (20, 999730771), (26, 769023670), (38, 526174090), (52, 384511835), (65, 307609468), (76, 263087045), (95, 210469636), (130, 153804734), (190, 105234818), (247, 80949860), (257, 77800060), (260, 76902367), (380, 52617409), (494, 40474930), (514, 38900030), (988, 20237465), (1028, 19450015), (1235, 16189972), (1285, 15560012), (2470, 8094986), (2570, 7780006), (3341, 5984620), (4883, 4094740), (4940, 4047493), (5140, 3890003), (6682, 2992310), (9766, 2047370), (13364, 1496155), (15749, 1269580), (16705, 1196924), (19532, 1023685), (24415, 818948), (31498, 634790), (33410, 598462), (48830, 409474), (62996, 317395), (63479, 314980), (66820, 299231), (78745, 253916), (97660, 204737), (126958, 157490)]