20856290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:124

約数の個数: 96

約数和(自身を含む): 48698496

約数和(自身を除く): 27842206

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 41, 43, 65, 70, 82, 86, 91, 130, 169, 182, 205, 215, 287, 301, 338, 410, 430, 455, 533, 559, 574, 602, 845, 910, 1066, 1118, 1183, 1435, 1505, 1690, 1763, 2366, 2665, 2795, 2870, 3010, 3526, 3731, 3913, 5330, 5590, 5915, 6929, 7267, 7462, 7826, 8815, 11830, 12341, 13858, 14534, 17630, 18655, 19565, 22919, 24682, 34645, 36335, 37310, 39130, 45838, 48503, 50869, 61705, 69290, 72670, 97006, 101738, 114595, 123410, 160433, 229190, 242515, 254345, 297947, 320866, 485030, 508690, 595894, 802165, 1489735, 1604330, 2085629, 2979470, 4171258, 10428145, 20856290]

約数ペア:

[(1, 20856290), (2, 10428145), (5, 4171258), (7, 2979470), (10, 2085629), (13, 1604330), (14, 1489735), (26, 802165), (35, 595894), (41, 508690), (43, 485030), (65, 320866), (70, 297947), (82, 254345), (86, 242515), (91, 229190), (130, 160433), (169, 123410), (182, 114595), (205, 101738), (215, 97006), (287, 72670), (301, 69290), (338, 61705), (410, 50869), (430, 48503), (455, 45838), (533, 39130), (559, 37310), (574, 36335), (602, 34645), (845, 24682), (910, 22919), (1066, 19565), (1118, 18655), (1183, 17630), (1435, 14534), (1505, 13858), (1690, 12341), (1763, 11830), (2366, 8815), (2665, 7826), (2795, 7462), (2870, 7267), (3010, 6929), (3526, 5915), (3731, 5590), (3913, 5330)]