20198906

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:183

約数の個数: 64

約数和(自身を含む): 39916800

約数和(自身を除く): 19717894

約数列:

[1, 2, 7, 13, 14, 26, 29, 43, 58, 86, 89, 91, 178, 182, 203, 301, 377, 406, 559, 602, 623, 754, 1118, 1157, 1246, 1247, 2314, 2494, 2581, 2639, 3827, 3913, 5162, 5278, 7654, 7826, 8099, 8729, 16198, 16211, 17458, 18067, 26789, 32422, 33553, 36134, 49751, 53578, 67106, 99502, 110983, 113477, 221966, 226954, 234871, 348257, 469742, 696514, 776881, 1442779, 1553762, 2885558, 10099453, 20198906]

約数ペア:

[(1, 20198906), (2, 10099453), (7, 2885558), (13, 1553762), (14, 1442779), (26, 776881), (29, 696514), (43, 469742), (58, 348257), (86, 234871), (89, 226954), (91, 221966), (178, 113477), (182, 110983), (203, 99502), (301, 67106), (377, 53578), (406, 49751), (559, 36134), (602, 33553), (623, 32422), (754, 26789), (1118, 18067), (1157, 17458), (1246, 16211), (1247, 16198), (2314, 8729), (2494, 8099), (2581, 7826), (2639, 7654), (3827, 5278), (3913, 5162)]