19803567021

素因数分解:

$3^1\times 7^3\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{2141}}^1$

素因数の和:2355

約数の個数: 64

約数和(自身を含む): 31461696000

約数和(自身を除く): 11658128979

約数列:

[1, 3, 7, 21, 49, 89, 101, 147, 267, 303, 343, 623, 707, 1029, 1869, 2121, 2141, 4361, 4949, 6423, 8989, 13083, 14847, 14987, 26967, 30527, 34643, 44961, 62923, 91581, 103929, 104909, 188769, 190549, 216241, 314727, 440461, 571647, 648723, 734363, 1321383, 1333843, 1513687, 2203089, 3083227, 4001529, 4541061, 9249681, 9336901, 10595809, 19245449, 28010703, 31787427, 57736347, 65358307, 74170663, 134718143, 196074921, 222511989, 404154429, 943027001, 2829081003, 6601189007, 19803567021]

約数ペア:

[(1, 19803567021), (3, 6601189007), (7, 2829081003), (21, 943027001), (49, 404154429), (89, 222511989), (101, 196074921), (147, 134718143), (267, 74170663), (303, 65358307), (343, 57736347), (623, 31787427), (707, 28010703), (1029, 19245449), (1869, 10595809), (2121, 9336901), (2141, 9249681), (4361, 4541061), (4949, 4001529), (6423, 3083227), (8989, 2203089), (13083, 1513687), (14847, 1333843), (14987, 1321383), (26967, 734363), (30527, 648723), (34643, 571647), (44961, 440461), (62923, 314727), (91581, 216241), (103929, 190549), (104909, 188769)]