21172384

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{359}}^1$

素因数の和:485

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 23280416

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 97, 152, 194, 304, 359, 388, 608, 718, 776, 1436, 1552, 1843, 2872, 3104, 3686, 5744, 6821, 7372, 11488, 13642, 14744, 27284, 29488, 34823, 54568, 58976, 69646, 109136, 139292, 218272, 278584, 557168, 661637, 1114336, 1323274, 2646548, 5293096, 10586192, 21172384]

約数ペア:

[(1, 21172384), (2, 10586192), (4, 5293096), (8, 2646548), (16, 1323274), (19, 1114336), (32, 661637), (38, 557168), (76, 278584), (97, 218272), (152, 139292), (194, 109136), (304, 69646), (359, 58976), (388, 54568), (608, 34823), (718, 29488), (776, 27284), (1436, 14744), (1552, 13642), (1843, 11488), (2872, 7372), (3104, 6821), (3686, 5744)]