20789132

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:271

約数の個数: 72

約数和(自身を含む): 46922400

約数和(自身を除く): 26133268

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 41, 49, 52, 82, 91, 98, 164, 182, 196, 199, 287, 364, 398, 533, 574, 637, 796, 1066, 1148, 1274, 1393, 2009, 2132, 2548, 2587, 2786, 3731, 4018, 5174, 5572, 7462, 8036, 8159, 9751, 10348, 14924, 16318, 18109, 19502, 26117, 32636, 36218, 39004, 52234, 57113, 72436, 104468, 106067, 114226, 126763, 212134, 228452, 253526, 399791, 424268, 507052, 742469, 799582, 1484938, 1599164, 2969876, 5197283, 10394566, 20789132]

約数ペア:

[(1, 20789132), (2, 10394566), (4, 5197283), (7, 2969876), (13, 1599164), (14, 1484938), (26, 799582), (28, 742469), (41, 507052), (49, 424268), (52, 399791), (82, 253526), (91, 228452), (98, 212134), (164, 126763), (182, 114226), (196, 106067), (199, 104468), (287, 72436), (364, 57113), (398, 52234), (533, 39004), (574, 36218), (637, 32636), (796, 26117), (1066, 19502), (1148, 18109), (1274, 16318), (1393, 14924), (2009, 10348), (2132, 9751), (2548, 8159), (2587, 8036), (2786, 7462), (3731, 5572), (4018, 5174)]