21159502

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{211}}^1$

素因数の和:281

約数の個数: 64

約数和(自身を含む): 42739200

約数和(自身を除く): 21579698

約数列:

[1, 2, 7, 13, 14, 19, 26, 29, 38, 58, 91, 133, 182, 203, 211, 247, 266, 377, 406, 422, 494, 551, 754, 1102, 1477, 1729, 2639, 2743, 2954, 3458, 3857, 4009, 5278, 5486, 6119, 7163, 7714, 8018, 12238, 14326, 19201, 28063, 38402, 42833, 50141, 52117, 56126, 79547, 85666, 100282, 104234, 116261, 159094, 232522, 364819, 556829, 729638, 813827, 1113658, 1511393, 1627654, 3022786, 10579751, 21159502]

約数ペア:

[(1, 21159502), (2, 10579751), (7, 3022786), (13, 1627654), (14, 1511393), (19, 1113658), (26, 813827), (29, 729638), (38, 556829), (58, 364819), (91, 232522), (133, 159094), (182, 116261), (203, 104234), (211, 100282), (247, 85666), (266, 79547), (377, 56126), (406, 52117), (422, 50141), (494, 42833), (551, 38402), (754, 28063), (1102, 19201), (1477, 14326), (1729, 12238), (2639, 8018), (2743, 7714), (2954, 7163), (3458, 6119), (3857, 5486), (4009, 5278)]