21000427929

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1\times {\mathrm{197}}^1$

素因数の和:448

約数の個数: 128

約数和(自身を含む): 35467407360

約数和(自身を除く): 14466979431

約数列:

[1, 3, 9, 13, 27, 31, 39, 93, 97, 101, 117, 197, 279, 291, 303, 351, 403, 591, 837, 873, 909, 1209, 1261, 1313, 1773, 2561, 2619, 2727, 3007, 3131, 3627, 3783, 3939, 5319, 6107, 7683, 9021, 9393, 9797, 10881, 11349, 11817, 18321, 19109, 19897, 23049, 27063, 28179, 29391, 34047, 35451, 39091, 40703, 54963, 57327, 59691, 69147, 79391, 81189, 84537, 88173, 117273, 122109, 127361, 164889, 171981, 179073, 238173, 248417, 258661, 264519, 303707, 351819, 366327, 382083, 515943, 537219, 592379, 616807, 714519, 745251, 775983, 911121, 1055457, 1098981, 1146249, 1777137, 1850421, 1930009, 2143557, 2235753, 2327949, 2733363, 3438747, 3948191, 5331411, 5551263, 5790027, 6707259, 6983847, 7700927, 8018491, 8200089, 11844573, 15994233, 16653789, 17370081, 23102781, 24055473, 25090117, 35533719, 52110243, 59830279, 69308343, 72166419, 75270351, 106601157, 179490837, 207925029, 216499257, 225811053, 538472511, 677433159, 777793627, 1615417533, 2333380881, 7000142643, 21000427929]

約数ペア:

[(1, 21000427929), (3, 7000142643), (9, 2333380881), (13, 1615417533), (27, 777793627), (31, 677433159), (39, 538472511), (93, 225811053), (97, 216499257), (101, 207925029), (117, 179490837), (197, 106601157), (279, 75270351), (291, 72166419), (303, 69308343), (351, 59830279), (403, 52110243), (591, 35533719), (837, 25090117), (873, 24055473), (909, 23102781), (1209, 17370081), (1261, 16653789), (1313, 15994233), (1773, 11844573), (2561, 8200089), (2619, 8018491), (2727, 7700927), (3007, 6983847), (3131, 6707259), (3627, 5790027), (3783, 5551263), (3939, 5331411), (5319, 3948191), (6107, 3438747), (7683, 2733363), (9021, 2327949), (9393, 2235753), (9797, 2143557), (10881, 1930009), (11349, 1850421), (11817, 1777137), (18321, 1146249), (19109, 1098981), (19897, 1055457), (23049, 911121), (27063, 775983), (28179, 745251), (29391, 714519), (34047, 616807), (35451, 592379), (39091, 537219), (40703, 515943), (54963, 382083), (57327, 366327), (59691, 351819), (69147, 303707), (79391, 264519), (81189, 258661), (84537, 248417), (88173, 238173), (117273, 179073), (122109, 171981), (127361, 164889)]