19801698

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:263

約数の個数: 64

約数和(自身を含む): 47139840

約数和(自身を除く): 27338142

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 59, 61, 118, 122, 131, 177, 183, 262, 354, 366, 393, 413, 427, 786, 826, 854, 917, 1239, 1281, 1834, 2478, 2562, 2751, 3599, 5502, 7198, 7729, 7991, 10797, 15458, 15982, 21594, 23187, 23973, 25193, 46374, 47946, 50386, 54103, 55937, 75579, 108206, 111874, 151158, 162309, 167811, 324618, 335622, 471469, 942938, 1414407, 2828814, 3300283, 6600566, 9900849, 19801698]

約数ペア:

[(1, 19801698), (2, 9900849), (3, 6600566), (6, 3300283), (7, 2828814), (14, 1414407), (21, 942938), (42, 471469), (59, 335622), (61, 324618), (118, 167811), (122, 162309), (131, 151158), (177, 111874), (183, 108206), (262, 75579), (354, 55937), (366, 54103), (393, 50386), (413, 47946), (427, 46374), (786, 25193), (826, 23973), (854, 23187), (917, 21594), (1239, 15982), (1281, 15458), (1834, 10797), (2478, 7991), (2562, 7729), (2751, 7198), (3599, 5502)]