21955869

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:282

約数の個数: 48

約数和(自身を含む): 36691200

約数和(自身を除く): 14735331

約数列:

[1, 3, 9, 13, 23, 39, 41, 69, 117, 123, 199, 207, 299, 369, 533, 597, 897, 943, 1599, 1791, 2587, 2691, 2829, 4577, 4797, 7761, 8159, 8487, 12259, 13731, 23283, 24477, 36777, 41193, 59501, 73431, 106067, 110331, 178503, 187657, 318201, 535509, 562971, 954603, 1688913, 2439541, 7318623, 21955869]

約数ペア:

[(1, 21955869), (3, 7318623), (9, 2439541), (13, 1688913), (23, 954603), (39, 562971), (41, 535509), (69, 318201), (117, 187657), (123, 178503), (199, 110331), (207, 106067), (299, 73431), (369, 59501), (533, 41193), (597, 36777), (897, 24477), (943, 23283), (1599, 13731), (1791, 12259), (2587, 8487), (2691, 8159), (2829, 7761), (4577, 4797)]