19901511

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{3631}}^1$

素因数の和:3676

約数の個数: 32

約数和(自身を含む): 34867200

約数和(自身を除く): 14965689

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 87, 189, 203, 261, 609, 783, 1827, 3631, 5481, 10893, 25417, 32679, 76251, 98037, 105299, 228753, 315897, 686259, 737093, 947691, 2211279, 2843073, 6633837, 19901511]

約数ペア:

[(1, 19901511), (3, 6633837), (7, 2843073), (9, 2211279), (21, 947691), (27, 737093), (29, 686259), (63, 315897), (87, 228753), (189, 105299), (203, 98037), (261, 76251), (609, 32679), (783, 25417), (1827, 10893), (3631, 5481)]