21487635

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1597}}^1$

素因数の和:1644

約数の個数: 48

約数和(自身を含む): 41880384

約数和(自身を除く): 20392749

約数列:

[1, 3, 5, 9, 13, 15, 23, 39, 45, 65, 69, 115, 117, 195, 207, 299, 345, 585, 897, 1035, 1495, 1597, 2691, 4485, 4791, 7985, 13455, 14373, 20761, 23955, 36731, 62283, 71865, 103805, 110193, 183655, 186849, 311415, 330579, 477503, 550965, 934245, 1432509, 1652895, 2387515, 4297527, 7162545, 21487635]

約数ペア:

[(1, 21487635), (3, 7162545), (5, 4297527), (9, 2387515), (13, 1652895), (15, 1432509), (23, 934245), (39, 550965), (45, 477503), (65, 330579), (69, 311415), (115, 186849), (117, 183655), (195, 110193), (207, 103805), (299, 71865), (345, 62283), (585, 36731), (897, 23955), (1035, 20761), (1495, 14373), (1597, 13455), (2691, 7985), (4485, 4791)]