1212821205

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{271}}^1\times {\mathrm{383}}^1$

素因数の和:722

約数の個数: 64

約数和(自身を含む): 2105671680

約数和(自身を除く): 892850475

約数列:

[1, 3, 5, 15, 19, 41, 57, 95, 123, 205, 271, 285, 383, 615, 779, 813, 1149, 1355, 1915, 2337, 3895, 4065, 5149, 5745, 7277, 11111, 11685, 15447, 15703, 21831, 25745, 33333, 36385, 47109, 55555, 77235, 78515, 103793, 109155, 166665, 211109, 235545, 298357, 311379, 518965, 633327, 895071, 1055545, 1491785, 1556895, 1972067, 3166635, 4255513, 4475355, 5916201, 9860335, 12766539, 21277565, 29581005, 63832695, 80854747, 242564241, 404273735, 1212821205]

約数ペア:

[(1, 1212821205), (3, 404273735), (5, 242564241), (15, 80854747), (19, 63832695), (41, 29581005), (57, 21277565), (95, 12766539), (123, 9860335), (205, 5916201), (271, 4475355), (285, 4255513), (383, 3166635), (615, 1972067), (779, 1556895), (813, 1491785), (1149, 1055545), (1355, 895071), (1915, 633327), (2337, 518965), (3895, 311379), (4065, 298357), (5149, 235545), (5745, 211109), (7277, 166665), (11111, 109155), (11685, 103793), (15447, 78515), (15703, 77235), (21831, 55555), (25745, 47109), (33333, 36385)]