19971770

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1291}}^1$

素因数の和:1335

約数の個数: 64

約数和(自身を含む): 46884096

約数和(自身を除く): 26912326

約数列:

[1, 2, 5, 7, 10, 13, 14, 17, 26, 34, 35, 65, 70, 85, 91, 119, 130, 170, 182, 221, 238, 442, 455, 595, 910, 1105, 1190, 1291, 1547, 2210, 2582, 3094, 6455, 7735, 9037, 12910, 15470, 16783, 18074, 21947, 33566, 43894, 45185, 83915, 90370, 109735, 117481, 153629, 167830, 219470, 234962, 285311, 307258, 570622, 587405, 768145, 1174810, 1426555, 1536290, 1997177, 2853110, 3994354, 9985885, 19971770]

約数ペア:

[(1, 19971770), (2, 9985885), (5, 3994354), (7, 2853110), (10, 1997177), (13, 1536290), (14, 1426555), (17, 1174810), (26, 768145), (34, 587405), (35, 570622), (65, 307258), (70, 285311), (85, 234962), (91, 219470), (119, 167830), (130, 153629), (170, 117481), (182, 109735), (221, 90370), (238, 83915), (442, 45185), (455, 43894), (595, 33566), (910, 21947), (1105, 18074), (1190, 16783), (1291, 15470), (1547, 12910), (2210, 9037), (2582, 7735), (3094, 6455)]