20385480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8941}}^1$

素因数の和:8974

約数の個数: 64

約数和(自身を含む): 64382400

約数和(自身を除く): 43996920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 95, 114, 120, 152, 190, 228, 285, 380, 456, 570, 760, 1140, 2280, 8941, 17882, 26823, 35764, 44705, 53646, 71528, 89410, 107292, 134115, 169879, 178820, 214584, 268230, 339758, 357640, 509637, 536460, 679516, 849395, 1019274, 1072920, 1359032, 1698790, 2038548, 2548185, 3397580, 4077096, 5096370, 6795160, 10192740, 20385480]

約数ペア:

[(1, 20385480), (2, 10192740), (3, 6795160), (4, 5096370), (5, 4077096), (6, 3397580), (8, 2548185), (10, 2038548), (12, 1698790), (15, 1359032), (19, 1072920), (20, 1019274), (24, 849395), (30, 679516), (38, 536460), (40, 509637), (57, 357640), (60, 339758), (76, 268230), (95, 214584), (114, 178820), (120, 169879), (152, 134115), (190, 107292), (228, 89410), (285, 71528), (380, 53646), (456, 44705), (570, 35764), (760, 26823), (1140, 17882), (2280, 8941)]