20195671678

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{19471}}^1$

素因数の和:19673

約数の個数: 64

約数和(自身を含む): 38470440960

約数和(自身を除く): 18274769282

約数列:

[1, 2, 7, 13, 14, 26, 41, 82, 91, 139, 182, 278, 287, 533, 574, 973, 1066, 1807, 1946, 3614, 3731, 5699, 7462, 11398, 12649, 19471, 25298, 38942, 39893, 74087, 79786, 136297, 148174, 253123, 272594, 506246, 518609, 798311, 1037218, 1596622, 1771861, 2706469, 3543722, 5412938, 5588177, 10378043, 11176354, 18945283, 20756086, 35184097, 37890566, 70368194, 72646301, 110965229, 145292602, 221930458, 246288679, 492577358, 776756603, 1442547977, 1553513206, 2885095954, 10097835839, 20195671678]

約数ペア:

[(1, 20195671678), (2, 10097835839), (7, 2885095954), (13, 1553513206), (14, 1442547977), (26, 776756603), (41, 492577358), (82, 246288679), (91, 221930458), (139, 145292602), (182, 110965229), (278, 72646301), (287, 70368194), (533, 37890566), (574, 35184097), (973, 20756086), (1066, 18945283), (1807, 11176354), (1946, 10378043), (3614, 5588177), (3731, 5412938), (5699, 3543722), (7462, 2706469), (11398, 1771861), (12649, 1596622), (19471, 1037218), (25298, 798311), (38942, 518609), (39893, 506246), (74087, 272594), (79786, 253123), (136297, 148174)]