21000409015

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{269}}^1\times {\mathrm{659}}^1$

素因数の和:1024

約数の個数: 64

約数和(自身を含む): 28226880000

約数和(自身を除く): 7226470985

約数列:

[1, 5, 19, 29, 43, 95, 145, 215, 269, 551, 659, 817, 1247, 1345, 2755, 3295, 4085, 5111, 6235, 7801, 11567, 12521, 19111, 23693, 25555, 28337, 39005, 57835, 62605, 95555, 118465, 141685, 148219, 177271, 219773, 335443, 363109, 538403, 741095, 821773, 886355, 1098865, 1677215, 1815545, 2692015, 3368149, 4108865, 5140859, 6373417, 7622653, 15613687, 16840745, 25704295, 31867085, 38113265, 78068435, 97676321, 144830407, 221056937, 488381605, 724152035, 1105284685, 4200081803, 21000409015]

約数ペア:

[(1, 21000409015), (5, 4200081803), (19, 1105284685), (29, 724152035), (43, 488381605), (95, 221056937), (145, 144830407), (215, 97676321), (269, 78068435), (551, 38113265), (659, 31867085), (817, 25704295), (1247, 16840745), (1345, 15613687), (2755, 7622653), (3295, 6373417), (4085, 5140859), (5111, 4108865), (6235, 3368149), (7801, 2692015), (11567, 1815545), (12521, 1677215), (19111, 1098865), (23693, 886355), (25555, 821773), (28337, 741095), (39005, 538403), (57835, 363109), (62605, 335443), (95555, 219773), (118465, 177271), (141685, 148219)]