18922575

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{271}}^1$

素因数の和:317

約数の個数: 72

約数和(自身を含む): 38449920

約数和(自身を除く): 19527345

約数列:

[1, 3, 5, 7, 15, 19, 21, 25, 35, 49, 57, 75, 95, 105, 133, 147, 175, 245, 271, 285, 399, 475, 525, 665, 735, 813, 931, 1225, 1355, 1425, 1897, 1995, 2793, 3325, 3675, 4065, 4655, 5149, 5691, 6775, 9485, 9975, 13279, 13965, 15447, 20325, 23275, 25745, 28455, 36043, 39837, 47425, 66395, 69825, 77235, 108129, 128725, 142275, 180215, 199185, 252301, 331975, 386175, 540645, 756903, 901075, 995925, 1261505, 2703225, 3784515, 6307525, 18922575]

約数ペア:

[(1, 18922575), (3, 6307525), (5, 3784515), (7, 2703225), (15, 1261505), (19, 995925), (21, 901075), (25, 756903), (35, 540645), (49, 386175), (57, 331975), (75, 252301), (95, 199185), (105, 180215), (133, 142275), (147, 128725), (175, 108129), (245, 77235), (271, 69825), (285, 66395), (399, 47425), (475, 39837), (525, 36043), (665, 28455), (735, 25745), (813, 23275), (931, 20325), (1225, 15447), (1355, 13965), (1425, 13279), (1897, 9975), (1995, 9485), (2793, 6775), (3325, 5691), (3675, 5149), (4065, 4655)]