28199990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{233}}^1$

素因数の和:286

約数の個数: 96

約数和(自身を含む): 67223520

約数和(自身を除く): 39023530

約数列:

[1, 2, 5, 7, 10, 13, 14, 19, 26, 35, 38, 49, 65, 70, 91, 95, 98, 130, 133, 182, 190, 233, 245, 247, 266, 455, 466, 490, 494, 637, 665, 910, 931, 1165, 1235, 1274, 1330, 1631, 1729, 1862, 2330, 2470, 3029, 3185, 3262, 3458, 4427, 4655, 6058, 6370, 8155, 8645, 8854, 9310, 11417, 12103, 15145, 16310, 17290, 21203, 22135, 22834, 24206, 30290, 30989, 42406, 44270, 57085, 57551, 60515, 61978, 106015, 114170, 115102, 121030, 148421, 154945, 212030, 216923, 287755, 296842, 309890, 402857, 433846, 575510, 742105, 805714, 1084615, 1484210, 2014285, 2169230, 2819999, 4028570, 5639998, 14099995, 28199990]

約数ペア:

[(1, 28199990), (2, 14099995), (5, 5639998), (7, 4028570), (10, 2819999), (13, 2169230), (14, 2014285), (19, 1484210), (26, 1084615), (35, 805714), (38, 742105), (49, 575510), (65, 433846), (70, 402857), (91, 309890), (95, 296842), (98, 287755), (130, 216923), (133, 212030), (182, 154945), (190, 148421), (233, 121030), (245, 115102), (247, 114170), (266, 106015), (455, 61978), (466, 60515), (490, 57551), (494, 57085), (637, 44270), (665, 42406), (910, 30989), (931, 30290), (1165, 24206), (1235, 22834), (1274, 22135), (1330, 21203), (1631, 17290), (1729, 16310), (1862, 15145), (2330, 12103), (2470, 11417), (3029, 9310), (3185, 8854), (3262, 8645), (3458, 8155), (4427, 6370), (4655, 6058)]